bbbb bblb blkb blob blok bloo bobb bobo boko bolk boll bolo boob book bool bovo k-lo kbbb kbbk kbbl kbbo kbkb kbkk kbkl kbko kbkv kblb kbll kblo kblv kbob kbok kboo kbov kbvb kbvo kkbb kkbl kkbo kkkk kklb kkll kklo kklv kkob kkol kkoo kkov kkvv klbb klbl klkk klkl klko klkv kllb kllk kllv klob klok klol kloo klov klvb klvk klvl klvo klvv kobb kobk kobo kokb kokk koko kolb kolk koll kolo kolv koob kook kool kooo koov kovk kovo kvbl kvkl kvlb kvlo kvlv kvob kvok kvol kvoo kvov kvvl kvvv llll lloo lo-v lob- lobb lobo lokk loko loll lolo loob look lool lovo lvov obbo obkb obok obol okko oklo okok okol olbo ollo olov oolo oooo ovo- ovol ovoo vlok volk voll volo vool vovk vvob vvvv