-ic -ol -th bbb bbc bbh bbi bbk bbl bbo bbt bcb bcc bch bci bck bcl bco bct bhb bhc bhh bhi bhk bhl bho bht bi- bib bic bih bii bik bil bio bit bkb bkc bkk bkl bko bkt blb blc blh bli blk bll blo blt bob boc boh boi bok bol boo bot btb btc bth bti btk btl bto btt c-- cbb cbc cbh cbi cbk cbl cbo cbt ccb ccc cch cci cck ccl cco cct ch- chb chc chh chi chk chl cho cht ci- cib cic cih cii cik cil cio cit ckb ckc ckh cki cko ckt cl- clb clc clh cli clk cll clo clt co- cob coc coh coi cok col coo cot ctb ctc cth cti ctk ctl cto ctt h-i hbb hbc hbh hbi hbk hbl hbo hbt hcb hcc hch hci hck hcl hco hct hhb hhc hhh hhi hhk hhl hho hht hib hic hih hii hik hil hio hit hkb hkh hki hkk hkl hko hkt hlb hlc hlh hli hll hlo hlt hob hoc hoh hoi hok hol hoo hot htb htc hth hti htk htl hto htt ibb ibc ibh ibi ibk ibl ibo ibt icb icc ich ici ick icl ico ict ihb ihc ihh ihi ihk ihl iho iht iib iic iih iii iil iio iit ikb ikc iki ikk ikl iko ikt il- ilb ilc ilh ili ilk ill ilo ilt io- iob ioc ioh ioi iol ioo iot itb itc ith iti itk itl ito itt k-t kbb kbc kbh kbi kbk kbl kbo kcb kcc kch kci kck kcl kct khh khi khk kho kib kic kih kii kik kil kio kit kkb kkc kkh kki kkk kkl kkt kl- klb klc klh kli klo klt kob koc koh koi kok kol koo kot ktb ktc kth ktk ktl kto ktt lbb lbc lbh lbi lbk lbl lbo lbt lcb lcc lch lci lck lcl lco lct lhb lhc lhh lhi lhk lho lht lib lic lih lii lik lil lio lit lkb lkh lkl lkt llb llc lli llk lll llo llt lob loc loh loi lok lol loo lot ltb ltc lth lti ltk ltl lto ltt o-i ob- obb obc obh obi obk obl obo obt oc- ocb occ och oci ock ocl oco oct ohc ohh ohi ohl oho oht oib oic oii oik oil oio oit okb okc oki okk okl oko olb olc oli olk oll olo olt oo- oob ooc ooh ooi ook ool ooo oot ot- otb otc oth oti otk otl oto ott tbb tbc tbh tbi tbk tbl tbo tbt tcb tcc tch tci tck tcl tco tct th- thb thc thh thi thk thl tho tht tib tic tih tii tik til tio tit tkb tkc tkk tkl tko tkt tlc tlh tli tlk tll tlo tlt to- tob toc toh toi tok tol too tot ttb ttc tth tti ttk ttl tto ttt