-er -ic b-u bbb bbc bbe bbi bbk bbl bbr bbt bbu bcb bcc bce bci bck bcl bcr bct bcu be- beb bec bee bei bek bel ber bet beu bi- bib bic bie bii bik bil bir bit biu bkb bkc bke bkk bkl bkr bkt blb blc ble bli blk bll blr blt blu brb bre bri brk brl brr brt bru btb btc bte bti btk btl btr btt btu bub buc bue bui buk bul bur but buu c-- cbb cbc cbe cbi cbk cbl cbr cbt cbu ccb ccc cce cci cck ccl ccr cct ccu ce- ceb cec cee cei cek cel cer cet ceu ci- cib cic cie cii cik cil cir cit ciu ckb ckc cki ckt cl- clb clc cle cli clk cll clr clt clu crb crc cre cri crk crl crr crt cru ctb ctc cte cti ctk ctl ctr ctt ctu cub cuc cue cui cuk cul cur cut cuu ebb ebc ebe ebi ebk ebl ebr ebt ebu ec- ecb ecc ece eci eck ecl ecr ect ecu eeb eec eee eek eel eer eet eib eic eie eii eik eil eir eit eiu ekb ekc eke eki ekl ekr ekt eku elb elc ele eli elk ell elr elt elu erb erc ere eri erk erl err ert eru etb etc ete eti etk etl etr ett etu eu- eub euc eue eui eul eur eut ibb ibc ibe ibi ibk ibl ibr ibt ibu icb icc ice ici ick icl icr ict icu ie- iec iee iei iek iel ier iet iib iic iie iii iil iir iit iiu ikb ikc ike iki ikk ikl ikr ikt iku il- ilb ilc ile ili ilk ill ilr ilt ilu ir- irb irc ire iri irk irl irr irt iru itb itc ite iti itk itl itt itu iu- iub iuc iue iui iur iut k-t kbb kbc kbe kbi kbk kbl kbr kbu kcb kcc kce kci kck kcl kcr kct kcu ke- keb kec kee kei kek kel ker ket kib kic kie kii kik kil kir kit kiu kkb kkc kke kki kkk kkl kkr kkt kku kl- klb klc kli klr klt klu krc kri krk krl krr krt kru ktb ktc kte ktk ktl ktr ktt ktu kub kuc kue kui kuk kul kur kut kuu lbb lbc lbe lbi lbk lbl lbr lbt lbu lcb lcc lce lci lck lcl lcr lct lcu leb lec lee lei lek lel ler let leu lib lic lie lii lik lil lir lit liu lkb lkl lkr lkt llb llc lle lli llk lll llr llt llu lrb lrc lri lrk lrr lrt lru ltb ltc lte lti ltk ltl ltr ltt ltu lub luc lue lui luk lul lur lut luu rbb rbc rbe rbi rbk rbl rbr rbt rbu rcb rcc rce rci rcl rcr rct rcu re- reb rec ree rei rek rel rer ret reu rib ric rie rii rik ril rir rit rkb rkc rke rkk rkt rku rlc rle rli rll rlr rlt rlu rrb rrc rri rrk rrl rrr rrt rru rtb rtc rte rti rtk rtl rtr rtt rtu rub ruc rue rui ruk rur rut ruu tbb tbc tbe tbi tbk tbl tbr tbt tbu tcb tcc tce tci tck tcl tcr tct tcu te- teb tec tee tei tek tel ter tet teu tib tic tie tii tik til tir tit tiu tkb tkc tke tkk tkl tkr tkt tlc tle tli tlk tll tlr tlt tlu trb trc tre tri trk trl trr trt tru ttb ttc tte tti ttk ttl ttr ttt ttu tub tuc tue tui tuk tul tur tut tuu ubb ubc ube ubi ubk ubl ubr ubt ubu ucb ucc uce uci uck ucl ucr uct ucu ueb uec uee uei uel uer uet uib uic uie uii uil uir uit uiu ukb ukc uke uki ukk ukl ukr uku ulb ulc ule uli ulk ull ulr ult ulu ur- urb urc ure uri urk url urr urt uru utb utc ute uti utk utl utr utt utu uuc uue uur uut uuu