-er -ic b-u bbb bbc bbe bbh bbi bbk bbl bbr bbu bcb bcc bce bch bci bck bcl bcr bcu be- beb bec bee beh bei bek bel ber beu bhb bhc bhe bhh bhi bhk bhl bhr bhu bi- bib bic bie bih bii bik bil bir biu bkb bkc bke bkk bkl bkr blb blc ble blh bli blk bll blr blu brb bre brh bri brk brl brr bru bub buc bue buh bui buk bul bur buu c-- cbb cbc cbe cbh cbi cbk cbl cbr cbu ccb ccc cce cch cci cck ccl ccr ccu ce- ceb cec cee ceh cei cek cel cer ceu ch- chb chc che chh chi chk chl chr chu ci- cib cic cie cih cii cik cil cir ciu ckb ckc ckh cki cl- clb clc cle clh cli clk cll clr clu crb crc cre crh cri crk crl crr cru cub cuc cue cuh cui cuk cul cur cuu ebb ebc ebe ebh ebi ebk ebl ebr ebu ec- ecb ecc ece ech eci eck ecl ecr ecu eeb eec eee eek eel eer ehb ehc ehe ehh ehi ehl ehr ehu eib eic eie eii eik eil eir eiu ekb ekc eke ekh eki ekl ekr eku elb elc ele elh eli elk ell elr elu erb erc ere erh eri erk erl err eru eu- eub euc eue eui eul eur h-i hbb hbc hbe hbh hbi hbk hbl hbr hbu hcb hcc hce hch hci hck hcl hcr he- heb hec hee heh hei hek hel her heu hhb hhc hhe hhh hhi hhk hhl hhr hhu hib hic hie hih hii hik hil hir hiu hkb hkh hki hkk hkl hkr hku hlb hlc hle hlh hli hll hlr hlu hr- hrb hrc hre hrh hri hrk hrl hrr hru hub huc hue huh hui huk hul hur huu ibb ibc ibe ibh ibi ibk ibl ibr ibu icb icc ice ich ici ick icl icr icu ie- iec iee iei iek iel ier ihb ihc ihe ihh ihi ihk ihl ihr ihu iib iic iie iih iii iil iir iiu ikb ikc ike iki ikk ikl ikr iku il- ilb ilc ile ilh ili ilk ill ilr ilu ir- irb irc ire iri irk irl irr iru iu- iub iuc iue iui iur kbb kbc kbe kbh kbi kbk kbl kbr kbu kcb kcc kce kch kci kck kcl kcr kcu ke- keb kec kee keh kei kek kel ker khe khh khi khk khr khu kib kic kie kih kii kik kil kir kiu kkb kkc kke kkh kki kkk kkl kkr kku kl- klb klc klh kli klr klu krc kri krk krl krr kru kub kuc kue kuh kui kuk kul kur kuu lbb lbc lbe lbh lbi lbk lbl lbr lbu lcb lcc lce lch lci lck lcl lcr lcu leb lec lee leh lei lek lel ler leu lhb lhc lhh lhi lhk lhr lhu lib lic lie lih lii lik lil lir liu lkb lkh lkl lkr llb llc lle lli llk lll llr llu lrb lrc lrh lri lrk lrr lru lub luc lue luh lui luk lul lur luu rbb rbc rbe rbh rbi rbk rbl rbr rbu rcb rcc rce rch rci rcl rcr rcu re- reb rec ree reh rei rek rel rer reu rh- rhb rhc rhe rhh rhi rhl rhr rhu rib ric rie rih rii rik ril rir rkb rkc rke rkk rku rlc rle rlh rli rll rlr rlu rrb rrc rrh rri rrk rrl rrr rru rub ruc rue ruh rui ruk rur ruu ubb ubc ube ubh ubi ubk ubl ubr ubu ucb ucc uce uch uci uck ucl ucr ucu ueb uec uee ueh uei uel uer uhb uhc uhe uhh uhi uhl uhr uhu uib uic uie uii uil uir uiu ukb ukc uke uki ukk ukl ukr uku ulb ulc ule uli ulk ull ulr ulu ur- urb urc ure uri urk url urr uru uuc uue uur uuu

bbbb bbch bbci bbeb bblb bbrc bcbc bccc bcci bccl bcec bcer bche bcie bcru bcuc bebb bebe bebi bech beci beck becu beeb beek beel beer behr beic beik beil beir beke beki bele beli belk bell belu berc bere beri berk berr beru beuk beur bhcc bhel bher bhie bhil bhir bhur bhuu bibb bibe bibi bibl bicc bice bich bici bick bieb biel bier bieu bihe bihi bihl bihu bike bikh biku bile bili bilk bill bilu birb bire biri birk birl birr biru blcu bleb blee bleh blei blek bleu blic blik blir blkb blrc blub blue blur brcb brce breb brec bree brei brek brel brer bric brie brih brik bril brkb brrr bruc brue bruh bubb bube bubi bubu bucc buce buch buci buck bucu buel buer bueu buhe buhi buhl buhr buic buie buik buir buiu buke bukh buki bukk buku bulb bule buli bulk bull bulu bur- burb bure burh buri burk burl burr buru cbbc cbcc cbce cbcl cbcr cbcu cbec cbee cber cbhl cbir cbkl cbkr cblb cblc cbre cbrh cbrl ccbc cccb cccc ccci cccl cccu ccee ccel cche cchl cchr ccic ccii ccil ccir cclc ccli ccrc ccre ccri ccrl ccuc cebu cec- cece ceci ceeb ceec ceel cehl ceil ceke cel- celc cele celi cell cer- cerc cere ceri cerl ceui chce chch chci cheb chec chee cheh chek chel cher cheu chib chic chie chih chik chil chir chiu chkb chlc chlr chrb chrc chrr chub chui chuk chul chur cibc cibe cibi cicc cich cici cicr cicu ciee ciel cier cihr ciii cikr cili cilk cill cirb circ cire cirh ciri cirk cirl cirr ciuc ckbc ckbe ckbi ckch ckck ckcl cker ckrc clec clee clei clek cler cleu clib clic clii clik clir clri club clue cluh crbc crbu crcc crce crcr cre- creb crec cree creh crei creu crib cric crie crik criu crkc crkl crub