-ol b-p bbb bbe bbi bbk bbl bbo bbp bbt be- beb bee bei bek bel beo bep bet bi- bib bie bii bik bil bio bip bit bkb bke bkk bkl bko bkp bkt blb ble bli blk bll blo blp blt bob boe boi bok bol boo bop bot bpb bpe bpi bpl bpo bpp bpt btb bte bti btk btl bto btp btt ebb ebe ebi ebk ebl ebo ebp ebt eeb eee eek eel eeo eep eet eib eie eii eik eil eio eip eit ekb eke eki ekl eko ekp ekt elb ele eli elk ell elo elp elt eo- eob eoe eoi eok eol eoo eop eot ep- epb epe epi epl epo epp ept etb ete eti etk etl eto etp ett ibb ibe ibi ibk ibl ibo ibp ibt ie- iee iei iek iel iep iet iib iie iii iil iio iip iit ikb ike iki ikk ikl iko ikt il- ilb ile ili ilk ill ilo ilp ilt io- iob ioe ioi iol ioo iop iot ipb ipe ipi ipl ipo ipp ipt itb ite iti itk itl ito itp itt k-t kbb kbe kbi kbk kbl kbo kbp ke- keb kee kei kek kel keo kep ket kib kie kii kik kil kio kip kit kkb kke kki kkk kkl kkp kkt kl- klb kli klo klt kob koe koi kok kol koo kop kot kpe kpi kpk kpl kpo kpp kpt ktb kte ktk ktl kto ktp ktt l-p lbb lbe lbi lbk lbl lbo lbp lbt leb lee lei lek lel leo lep let lib lie lii lik lil lio lip lit lkb lkl lkp lkt llb lle lli llk lll llo llp llt lob loe loi lok lol loo lop lot lpb lpe lpi lpk lpl lpo lpp lpt ltb lte lti ltk ltl lto ltp ltt o-i ob- obb obe obi obk obl obo obp obt oeb oee oei oel oeo oep oet oib oie oii oik oil oio oip oit okb oke oki okk okl oko okp olb ole oli olk oll olo olp olt oo- oob ooi ook ool ooo oop oot op- opb ope opi opk opl opo opp opt ot- otb ote oti otk otl oto otp ott p-p pbb pbe pbi pbk pbl pbo pbp pbt peb pee pei pek pel peo pep pet pib pie pii pik pil pio pip pit pkb pke pki pkl pko pkp pkt plb ple pli plk pll plo plp plt pob poe poi pok pol poo pop pot ppb ppe ppi ppk ppl ppo ppp ppt pt- ptb pte pti ptk ptl pto ptp ptt tbb tbe tbi tbk tbl tbo tbp tbt te- teb tee tei tek tel teo tep tet tib tie tii tik til tio tip tit tkb tke tkk tkl tko tkp tkt tle tli tlk tll tlo tlp tlt to- tob toe toi tok tol too top tot tpb tpe tpi tpk tpl tpo tpp tpt ttb tte tti ttk ttl tto ttp ttt