-er -ic -ol b-u bbb bbc bbe bbi bbk bbl bbo bbr bbu bcb bcc bce bci bck bcl bco bcr bcu be- beb bec bee bei bek bel beo ber beu bi- bib bic bie bii bik bil bio bir biu bkb bkc bke bkk bkl bko bkr blb blc ble bli blk bll blo blr blu bob boc boe boi bok bol boo bor bou brb bre bri brk brl bro brr bru bub buc bue bui buk bul buo bur buu c-- cbb cbc cbe cbi cbk cbl cbo cbr cbu ccb ccc cce cci cck ccl cco ccr ccu ce- ceb cec cee cei cek cel ceo cer ceu ci- cib cic cie cii cik cil cio cir ciu ckb ckc cki cko cl- clb clc cle cli clk cll clo clr clu co- cob coc coe coi cok col coo cor cou crb crc cre cri crk crl cro crr cru cub cuc cue cui cuk cul cuo cur cuu ebb ebc ebe ebi ebk ebl ebo ebr ebu ec- ecb ecc ece eci eck ecl eco ecr ecu eeb eec eee eek eel eeo eer eib eic eie eii eik eil eio eir eiu ekb ekc eke eki ekl eko ekr eku elb elc ele eli elk ell elo elr elu eo- eob eoc eoe eoi eok eol eoo eor eou erb erc ere eri erk erl ero err eru eu- eub euc eue eui eul eur ibb ibc ibe ibi ibk ibl ibo ibr ibu icb icc ice ici ick icl ico icr icu ie- iec iee iei iek iel ier iib iic iie iii iil iio iir iiu ikb ikc ike iki ikk ikl iko ikr iku il- ilb ilc ile ili ilk ill ilo ilr ilu io- iob ioc ioe ioi iol ioo ior iou ir- irb irc ire iri irk irl iro irr iru iu- iub iuc iue iui iur kbb kbc kbe kbi kbk kbl kbo kbr kbu kcb kcc kce kci kck kcl kcr kcu ke- keb kec kee kei kek kel keo ker kib kic kie kii kik kil kio kir kiu kkb kkc kke kki kkk kkl kkr kku kl- klb klc kli klo klr klu kob koc koe koi kok kol koo kor kou krc kri krk krl kro krr kru kub kuc kue kui kuk kul kur kuu lbb lbc lbe lbi lbk lbl lbo lbr lbu lcb lcc lce lci lck lcl lco lcr lcu leb lec lee lei lek lel leo ler leu lib lic lie lii lik lil lio lir liu lkb lkl lkr llb llc lle lli llk lll llo llr llu lob loc loe loi lok lol loo lor lou lrb lrc lri lrk lro lrr lru lub luc lue lui luk lul luo lur luu o-i ob- obb obc obe obi obk obl obo obr obu oc- ocb occ oci ock ocl oco ocr ocu oeb oec oee oei oel oeo oer oib oic oie oii oik oil oio oir oiu okb okc oke oki okk okl oko okr oku olb olc ole oli olk oll olo olu oo- oob ooc ooi ook ool ooo oor or- orb orc ore ori ork orl oro orr oru ou- ouc oue oui ouk oul ouo our rbb rbc rbe rbi rbk rbl rbo rbr rbu rcb rcc rce rci rcl rco rcr rcu re- reb rec ree rei rek rel reo rer reu rib ric rie rii rik ril rio rir rkb rkc rke rkk rko rku rlc rle rli rll rlo rlr rlu rob roc roe roi rok rol roo ror rou rrb rrc rri rrk rrl rrr rru rub ruc rue rui ruk ruo rur ruu ubb ubc ube ubi ubk ubl ubo ubr ubu ucb ucc uce uci uck ucl uco ucr ucu ueb uec uee uei uel uer uib uic uie uii uil uio uir uiu ukb ukc uke uki ukk ukl ukr uku ulb ulc ule uli ulk ull ulo ulr ulu uob uoc uoe uok uol uoo uor ur- urb urc ure uri urk url uro urr uru uuc uue uur uuu