bbb bbi bbl bbq bbs bbt bi- bib bii bil bis bit blb bli bll blq bls blt bqt bsb bsi bsl bss bst btb bti btl btq bts btt ibb ibi ibl ibs ibt iib iii iil iis iit il- ilb ili ill ilq ils ilt iqs iqt is- isb isi isl isq iss ist itb iti itl itq its itt lbb lbi lbl lbs lbt lib lii lil liq lis lit llb lli lll llq lls llt lsb lsi lsl lsq lss lst ltb lti ltl lts ltt qbq qbs qil qis qit qls qqq qsi qsl qst qti qtq qts sbb sbi sbl sbq sbs sbt sib sii sil siq sis sit slb sli sll slq sls slt sqi sql sqq sqs ss- ssb ssi ssl ssq sss sst stb sti stl stq sts stt tbb tbi tbl tbs tbt tib tii til tis tit tli tll tls tlt tsb tsi tsl tsq tss tst ttb tti ttl tts ttt