-er -ic b-u bbb bbc bbe bbg bbh bbi bbl bbr bbu bcb bcc bce bcg bch bci bcl bcr bcu be- beb bec bee beg beh bei bel ber beu bgb bgc bge bgg bgh bgi bgl bgr bgu bhb bhc bhe bhg bhh bhi bhl bhr bhu bi- bib bic bie big bih bii bil bir biu blb blc ble blg blh bli bll blr blu brb bre brg brh bri brl brr bru bub buc bue bug buh bui bul bur buu c-- cbb cbc cbe cbg cbh cbi cbl cbr cbu ccb ccc cce ccg cch cci ccl ccr ccu ce- ceb cec cee ceg ceh cei cel cer ceu cgb cgc cge cgg cgh cgi cgl cgr cgu ch- chb chc che chg chh chi chl chr chu ci- cib cic cie cig cih cii cil cir ciu cl- clb clc cle clg clh cli cll clr clu crb crc cre crg crh cri crl crr cru cub cuc cue cug cuh cui cul cur cuu ebb ebc ebe ebg ebh ebi ebl ebr ebu ec- ecb ecc ece ecg ech eci ecl ecr ecu eeb eec eee eeg eel eer egb egc ege egg egh egi egl egr egu ehb ehc ehe ehg ehh ehi ehl ehr ehu eib eic eie eig eii eil eir eiu elb elc ele elg elh eli ell elr elu erb erc ere erg erh eri erl err eru eu- eub euc eue eug eui eul eur gbc gbe gbg gbh gbi gbl gbr gbu gcb gcc gce gcg gch gci gcl gcr gcu ge- geb gec gee geg geh gei gel ger geu ggb ggc ggg ggh ggi ggr ggu ghb ghc ghe ghg ghh ghi ghl ghr gib gic gie gig gih gii gil gir giu glb glc gle glg glh gli gll glr glu grb grc gre grg grh gri grl grr gru gu- gub guc gue gug gui gul gur guu h-i hbb hbc hbe hbg hbh hbi hbl hbr hbu hcb hcc hce hcg hch hci hcl hcr he- heb hec hee heg heh hei hel her heu hgb hgc hge hgg hgh hgi hgl hgr hgu hhb hhc hhe hhg hhh hhi hhl hhr hhu hib hic hie hig hih hii hil hir hiu hlb hlc hle hlg hlh hli hll hlr hlu hr- hrb hrc hre hrg hrh hri hrl hrr hru hub huc hue hug huh hui hul hur huu ibb ibc ibe ibg ibh ibi ibl ibr ibu icb icc ice icg ich ici icl icr icu ie- iec iee ieg iei iel ier igb igc ige igg igh igi igl igr igu ihb ihc ihe ihg ihh ihi ihl ihr ihu iib iic iie iih iii iil iir iiu il- ilb ilc ile ilg ilh ili ill ilr ilu ir- irb irc ire irg iri irl irr iru iu- iub iuc iue iug iui iur lbb lbc lbe lbg lbh lbi lbl lbr lbu lcb lcc lce lcg lch lci lcl lcr lcu leb lec lee leg leh lei lel ler leu lgb lgc lge lgg lgh lgi lgl lgr lgu lhb lhc lhh lhi lhr lhu lib lic lie lig lih lii lil lir liu llb llc lle llg lli lll llr llu lrb lrc lrg lrh lri lrr lru lub luc lue lug luh lui lul lur luu rbb rbc rbe rbg rbh rbi rbl rbr rbu rcb rcc rce rcg rch rci rcl rcr rcu re- reb rec ree reg reh rei rel rer reu rgb rgc rge rgg rgh rgi rgr rh- rhb rhc rhe rhg rhh rhi rhl rhr rhu rib ric rie rig rih rii ril rir rlc rle rlg rlh rli rll rlr rlu rrb rrc rrg rrh rri rrl rrr rru rub ruc rue rug ruh rui rur ruu ubb ubc ube ubg ubh ubi ubl ubr ubu ucb ucc uce ucg uch uci ucl ucr ucu ueb uec uee ueg ueh uei uel uer ugb ugc uge ugg ugh ugi ugl ugr ugu uhb uhc uhe uhh uhi uhl uhr uhu uib uic uie uig uii uil uir uiu ulb ulc ule ulg uli ull ulr ulu ur- urb urc ure urg uri url urr uru uuc uue uug uur uuu

bbbb bbch bbci bbeb bblb bbrc bbrg bcbc bcbg bccc bcci bccl bcec bcer bche bcie bcru bcuc bebb bebe bebi bech beci becu beeb beeg beel beer begg begi begu behr beic beil beir bele belg beli bell belu berc bere berg beri berr beru beur bhcc bhel bher bhie bhil bhir bhur bhuu bibb bibe bibi bibl bicc bice bicg bich bici bieb biel bier bieu bigb bigc bige bigg bigu bihe bihi bihl bihu bile bili bill bilu birb bire birg biri birl birr biru blcu bleb blee bleg bleh blei bleu blic blir blrc blrg blub blue blur brcb brce breb brec bree breg brei brel brer bric brie brig brih bril brrr bruc brue brug bruh bubb bube bubi bubu bucc buce buch buci bucu buel buer bueu buge bugg bugh bugi buhe buhi buhl buhr buic buie buir buiu bulb bule bulg buli bull bulu bur- burb bure burg burh buri burl burr buru cbbc cbcc cbce cbcl cbcr cbcu cbec cbee cber cbgb cbhl cbir cblb cblc cbre cbrh cbrl ccbc cccb cccc ccci cccl cccu ccee ccel ccgc cche cchl cchr ccic ccii ccil ccir cclc cclg ccli ccrc ccre ccrg ccri ccrl ccuc cebu cec- cece ceci ceeb ceec ceel cege cehl ceil cel- celc cele celi cell cer- cerc cere ceri cerl ceui cgcc cgcg cgel cger chce chch chci cheb chec chee cheh chel cher cheu chgb chge chib chic chie chig chih chil chir chiu chlc chlr chrb chrc chrr chub chug chui chul chur cibc cibe cibi cicc cich cici cicr cicu ciee ciel cier cigi cigu cihr ciii cili cill cirb circ cire cirh ciri cirl cirr ciuc clec clee cleg clei cler cleu clib