If you're on Linux, you can try the Perl script utfinfo.pl (see also Program to check/look up UTF-8/Unicode characters in string on command line?); the output I get is:
$ echo ก็็็็็็็็็็ กิิิิิิิิิิ ก้้้้้้้้้้ | perl utfinfo.pl
Got 64 uchars
Char: 'ก' u: 3585 [0x0E01] b: 224,184,129 [0xE0,0xB8,0x81] n: THAI CHARACTER KO KAI [Thai]
Char: '็' u: 3655 [0x0E47] b: 224,185,135 [0xE0,0xB9,0x87] n: THAI CHARACTER MAITAIKHU [Thai]
Char: '็' u: 3655 [0x0E47] b: 224,185,135 [0xE0,0xB9,0x87] n: THAI CHARACTER MAITAIKHU [Thai]
Char: '็' u: 3655 [0x0E47] b: 224,185,135 [0xE0,0xB9,0x87] n: THAI CHARACTER MAITAIKHU [Thai]
Char: '็' u: 3655 [0x0E47] b: 224,185,135 [0xE0,0xB9,0x87] n: THAI CHARACTER MAITAIKHU [Thai]
Char: '็' u: 3655 [0x0E47] b: 224,185,135 [0xE0,0xB9,0x87] n: THAI CHARACTER MAITAIKHU [Thai]
Char: '็' u: 3655 [0x0E47] b: 224,185,135 [0xE0,0xB9,0x87] n: THAI CHARACTER MAITAIKHU [Thai]
Char: '็' u: 3655 [0x0E47] b: 224,185,135 [0xE0,0xB9,0x87] n: THAI CHARACTER MAITAIKHU [Thai]
Char: '็' u: 3655 [0x0E47] b: 224,185,135 [0xE0,0xB9,0x87] n: THAI CHARACTER MAITAIKHU [Thai]
Char: '็' u: 3655 [0x0E47] b: 224,185,135 [0xE0,0xB9,0x87] n: THAI CHARACTER MAITAIKHU [Thai]
Char: '็' u: 3655 [0x0E47] b: 224,185,135 [0xE0,0xB9,0x87] n: THAI CHARACTER MAITAIKHU [Thai]
Char: '็' u: 3655 [0x0E47] b: 224,185,135 [0xE0,0xB9,0x87] n: THAI CHARACTER MAITAIKHU [Thai]
Char: '็' u: 3655 [0x0E47] b: 224,185,135 [0xE0,0xB9,0x87] n: THAI CHARACTER MAITAIKHU [Thai]
Char: '็' u: 3655 [0x0E47] b: 224,185,135 [0xE0,0xB9,0x87] n: THAI CHARACTER MAITAIKHU [Thai]
Char: '็' u: 3655 [0x0E47] b: 224,185,135 [0xE0,0xB9,0x87] n: THAI CHARACTER MAITAIKHU [Thai]
Char: '็' u: 3655 [0x0E47] b: 224,185,135 [0xE0,0xB9,0x87] n: THAI CHARACTER MAITAIKHU [Thai]
Char: '็' u: 3655 [0x0E47] b: 224,185,135 [0xE0,0xB9,0x87] n: THAI CHARACTER MAITAIKHU [Thai]
Char: '็' u: 3655 [0x0E47] b: 224,185,135 [0xE0,0xB9,0x87] n: THAI CHARACTER MAITAIKHU [Thai]
Char: '็' u: 3655 [0x0E47] b: 224,185,135 [0xE0,0xB9,0x87] n: THAI CHARACTER MAITAIKHU [Thai]
Char: '็' u: 3655 [0x0E47] b: 224,185,135 [0xE0,0xB9,0x87] n: THAI CHARACTER MAITAIKHU [Thai]
Char: '็' u: 3655 [0x0E47] b: 224,185,135 [0xE0,0xB9,0x87] n: THAI CHARACTER MAITAIKHU [Thai]
Char: ' ' u: 32 [0x0020] b: 32 [0x20] n: SPACE [Basic Latin]
Char: 'ก' u: 3585 [0x0E01] b: 224,184,129 [0xE0,0xB8,0x81] n: THAI CHARACTER KO KAI [Thai]
Char: 'ิ' u: 3636 [0x0E34] b: 224,184,180 [0xE0,0xB8,0xB4] n: THAI CHARACTER SARA I [Thai]
Char: 'ิ' u: 3636 [0x0E34] b: 224,184,180 [0xE0,0xB8,0xB4] n: THAI CHARACTER SARA I [Thai]
Char: 'ิ' u: 3636 [0x0E34] b: 224,184,180 [0xE0,0xB8,0xB4] n: THAI CHARACTER SARA I [Thai]
Char: 'ิ' u: 3636 [0x0E34] b: 224,184,180 [0xE0,0xB8,0xB4] n: THAI CHARACTER SARA I [Thai]
Char: 'ิ' u: 3636 [0x0E34] b: 224,184,180 [0xE0,0xB8,0xB4] n: THAI CHARACTER SARA I [Thai]
Char: 'ิ' u: 3636 [0x0E34] b: 224,184,180 [0xE0,0xB8,0xB4] n: THAI CHARACTER SARA I [Thai]
Char: 'ิ' u: 3636 [0x0E34] b: 224,184,180 [0xE0,0xB8,0xB4] n: THAI CHARACTER SARA I [Thai]
Char: 'ิ' u: 3636 [0x0E34] b: 224,184,180 [0xE0,0xB8,0xB4] n: THAI CHARACTER SARA I [Thai]
Char: 'ิ' u: 3636 [0x0E34] b: 224,184,180 [0xE0,0xB8,0xB4] n: THAI CHARACTER SARA I [Thai]
Char: 'ิ' u: 3636 [0x0E34] b: 224,184,180 [0xE0,0xB8,0xB4] n: THAI CHARACTER SARA I [Thai]
Char: 'ิ' u: 3636 [0x0E34] b: 224,184,180 [0xE0,0xB8,0xB4] n: THAI CHARACTER SARA I [Thai]
Char: 'ิ' u: 3636 [0x0E34] b: 224,184,180 [0xE0,0xB8,0xB4] n: THAI CHARACTER SARA I [Thai]
Char: 'ิ' u: 3636 [0x0E34] b: 224,184,180 [0xE0,0xB8,0xB4] n: THAI CHARACTER SARA I [Thai]
Char: 'ิ' u: 3636 [0x0E34] b: 224,184,180 [0xE0,0xB8,0xB4] n: THAI CHARACTER SARA I [Thai]
Char: 'ิ' u: 3636 [0x0E34] b: 224,184,180 [0xE0,0xB8,0xB4] n: THAI CHARACTER SARA I [Thai]
Char: 'ิ' u: 3636 [0x0E34] b: 224,184,180 [0xE0,0xB8,0xB4] n: THAI CHARACTER SARA I [Thai]
Char: 'ิ' u: 3636 [0x0E34] b: 224,184,180 [0xE0,0xB8,0xB4] n: THAI CHARACTER SARA I [Thai]
Char: 'ิ' u: 3636 [0x0E34] b: 224,184,180 [0xE0,0xB8,0xB4] n: THAI CHARACTER SARA I [Thai]
Char: 'ิ' u: 3636 [0x0E34] b: 224,184,180 [0xE0,0xB8,0xB4] n: THAI CHARACTER SARA I [Thai]
Char: 'ิ' u: 3636 [0x0E34] b: 224,184,180 [0xE0,0xB8,0xB4] n: THAI CHARACTER SARA I [Thai]
Char: ' ' u: 32 [0x0020] b: 32 [0x20] n: SPACE [Basic Latin]
Char: 'ก' u: 3585 [0x0E01] b: 224,184,129 [0xE0,0xB8,0x81] n: THAI CHARACTER KO KAI [Thai]
Char: '้' u: 3657 [0x0E49] b: 224,185,137 [0xE0,0xB9,0x89] n: THAI CHARACTER MAI THO [Thai]
Char: '้' u: 3657 [0x0E49] b: 224,185,137 [0xE0,0xB9,0x89] n: THAI CHARACTER MAI THO [Thai]
Char: '้' u: 3657 [0x0E49] b: 224,185,137 [0xE0,0xB9,0x89] n: THAI CHARACTER MAI THO [Thai]
Char: '้' u: 3657 [0x0E49] b: 224,185,137 [0xE0,0xB9,0x89] n: THAI CHARACTER MAI THO [Thai]
Char: '้' u: 3657 [0x0E49] b: 224,185,137 [0xE0,0xB9,0x89] n: THAI CHARACTER MAI THO [Thai]
Char: '้' u: 3657 [0x0E49] b: 224,185,137 [0xE0,0xB9,0x89] n: THAI CHARACTER MAI THO [Thai]
Char: '้' u: 3657 [0x0E49] b: 224,185,137 [0xE0,0xB9,0x89] n: THAI CHARACTER MAI THO [Thai]
Char: '้' u: 3657 [0x0E49] b: 224,185,137 [0xE0,0xB9,0x89] n: THAI CHARACTER MAI THO [Thai]
Char: '้' u: 3657 [0x0E49] b: 224,185,137 [0xE0,0xB9,0x89] n: THAI CHARACTER MAI THO [Thai]
Char: '้' u: 3657 [0x0E49] b: 224,185,137 [0xE0,0xB9,0x89] n: THAI CHARACTER MAI THO [Thai]
Char: '้' u: 3657 [0x0E49] b: 224,185,137 [0xE0,0xB9,0x89] n: THAI CHARACTER MAI THO [Thai]
Char: '้' u: 3657 [0x0E49] b: 224,185,137 [0xE0,0xB9,0x89] n: THAI CHARACTER MAI THO [Thai]
Char: '้' u: 3657 [0x0E49] b: 224,185,137 [0xE0,0xB9,0x89] n: THAI CHARACTER MAI THO [Thai]
Char: '้' u: 3657 [0x0E49] b: 224,185,137 [0xE0,0xB9,0x89] n: THAI CHARACTER MAI THO [Thai]
Char: '้' u: 3657 [0x0E49] b: 224,185,137 [0xE0,0xB9,0x89] n: THAI CHARACTER MAI THO [Thai]
Char: '้' u: 3657 [0x0E49] b: 224,185,137 [0xE0,0xB9,0x89] n: THAI CHARACTER MAI THO [Thai]
Char: '้' u: 3657 [0x0E49] b: 224,185,137 [0xE0,0xB9,0x89] n: THAI CHARACTER MAI THO [Thai]
Char: '้' u: 3657 [0x0E49] b: 224,185,137 [0xE0,0xB9,0x89] n: THAI CHARACTER MAI THO [Thai]
Char: '้' u: 3657 [0x0E49] b: 224,185,137 [0xE0,0xB9,0x89] n: THAI CHARACTER MAI THO [Thai]
Was tempted to put it in the title, but didn't want to break the SE design. Would it work anyway? – magnattic – 2012-02-13T13:29:54.683
1They also break the preview for this post. – Ramhound – 2012-02-13T13:56:16.960
They belong to Thai. None of them are actual words. – boehj – 2012-02-18T23:10:18.743