-ic b-u bbb bbc bbf bbg bbi bbk bbr bbs bbu bcb bcc bcf bcg bci bck bcr bcs bcu bfb bfc bff bfg bfi bfr bfs bfu bgb bgc bgf bgg bgi bgk bgr bgs bgu bi- bib bic bif big bii bik bir bis biu bkb bkc bkf bkg bkk bkr bks brb brf brg bri brk brr brs bru bsb bsc bsf bsg bsi bsk bsr bss bsu bub buc buf bug bui buk bur bus buu c-- cbb cbc cbf cbg cbi cbk cbr cbs cbu ccb ccc ccf ccg cci cck ccr ccs ccu cfb cfc cff cfg cfi cfk cfr cfs cfu cgb cgc cgg cgi cgr cgs cgu ci- cib cic cif cig cii cik cir cis ciu ckb ckc cki cks crb crc crf crg cri crk crr crs cru csb csc csf csg csi csk csr css csu cub cuc cuf cug cui cuk cur cus cuu fbb fbc fbf fbg fbi fbk fbr fbs fbu fcb fcc fcf fcg fci fck fcr fcs fcu ffc fff ffg ffi ffk ffr ffs ffu fgb fgc fgf fgg fgi fgr fgs fib fic fif fig fii fik fir fis fiu fkb fkc fkf fkg fki fkk frb frc frf frg fri frk frr frs fru fsb fsc fsf fsg fsi fsk fsr fss fsu fub fuf fug fui fuk fur fus fuu gbc gbf gbg gbi gbk gbr gbs gbu gcb gcc gcf gcg gci gck gcr gcs gcu gfb gfc gff gfi gfk gfr gfs ggb ggc ggg ggi ggr ggs ggu gib gic gif gig gii gik gir gis giu gkb gks grb grc grf grg gri grk grr grs gru gsb gsc gsf gsg gsi gsk gsr gss gsu gu- gub guc guf gug gui guk gur gus guu i-f ibb ibc ibf ibg ibi ibk ibr ibs ibu icb icc icf icg ici ick icr ics icu ifb ifc iff ifg ifi ifr ifs ifu igb igc igf igg igi igk igr igs igu iib iic iif iii iir iis iiu ikb ikc ikf iki ikk ikr iks iku ir- irb irc irf irg iri irk irr irs iru is- isb isc isf isg isi isk isr iss isu iu- iub iuc iug iui iur ius kbb kbc kbf kbi kbk kbr kbs kbu kcb kcc kcg kci kck kcr kcs kcu kfc kff kfg kfi kfs kfu kgb kgc kgf kgi kgs kgu kib kic kif kig kii kik kir kis kiu kkb kkc kki kkk kkr kks kku krc krf krg kri krk krr krs kru ksb ksc ksf ksg ksi ksk ksr kss ksu kub kuc kug kui kuk kur kus kuu rbb rbc rbf rbg rbi rbk rbr rbs rbu rcb rcc rcf rcg rci rcr rcs rcu rfb rfc rff rfg rfi rfk rfr rfs rfu rgb rgc rgf rgg rgi rgk rgr rgs rib ric rif rig rii rik rir ris rkb rkc rkf rkg rkk rks rku rrb rrc rrf rrg rri rrk rrr rrs rru rsb rsc rsf rsg rsi rsk rsr rss rsu rub ruc ruf rug rui ruk rur rus ruu sbb sbc sbf sbg sbi sbk sbr sbs sbu scb scc scf scg sci sck scr scs scu sfb sfc sff sfg sfi sfk sfr sfs sfu sgb sgc sgf sgg sgi sgk sgr sgs sgu sib sic sif sig sii sik sir sis siu sk- skb skc skf skg ski skk skr sks sku sr- srb src srf srg sri srk srr srs ss- ssb ssc ssf ssg ssi ssk ssr sss ssu sub suc suf sug sui suk sur sus suu ubb ubc ubf ubg ubi ubk ubr ubs ubu ucb ucc ucf ucg uci uck ucr ucs ucu ufc uff ufg ufi ufr ufs ufu ugb ugc ugf ugg ugi ugk ugr ugs ugu uib uic uif uig uii uir uis uiu ukb ukc ukf uki ukk ukr uku ur- urb urc urf urg uri urk urr urs uru usb usc usf usg usi usk usr uss usu uuc uug uur uus uuu

bbbb bbbs bbci bbfc bbrc bbrg bcbc bcbg bcbs bccc bcci bccs bcfc bcgs bcis bcrs bcru bcsc bcss bcuc bfcs bffs bfgf bfsi bfsr bgfc bggs bibb bibi bibs bicc bicg bici bick bics biff bifi bigb bigc bigg bigs bigu biis biku birb birg biri birk birr birs biru bis- bisc bisk biss bisu brcb brfc brfu bric brig brik bris brkb brrr brrs brsb brsr bruc brug brus bsci bscs bsfc bsff bsfs bsgs bsic bssc bubb bubi bubs bubu bucc buci buck bucs bucu bufc buff bufr bugg bugi bugs buic buif buik buir buis buiu buki bukk buku bur- burb burg buri burk burr burs buru busc busi busk buss busu buus cbbc cbbs cbcc cbcr cbcs cbcu cbfb cbfc cbgb cbir cbkg cbkr cbsc cbsi cbus ccbc cccb cccc cccf ccci cccs cccu ccfc ccff ccfi ccgc ccgs ccic ccii ccir ccis ccrc ccrf ccrg ccri ccrs ccsf ccsg ccsi ccss ccuc ccus cfbc cfbr cfbs cfcb cfcf cfcs cffb cffr cfgs cfrb cfrg cfsg cfsi cgcc cgcg cgfc cggs cgis cgsb cgss cibc cibi cicc cici cicr cics cicu ciff cifg cifs cigi cigs cigu ciii ciis cikr cirb circ ciri cirk cirr cirs cis- cisc cisk cisr ciss ciuc cius ckbc ckbi ckck ckcs ckfi ckfr ckrc cksb crbc crbu crcc crcr crfc crfs crgs crib cric crif crig crik cris criu crkc crss crub crug cruk crus csbf cscb cscc cscf csci cscr cscs csfc csfr csib csik csir csis csks csrc csrs cssr csuf csur csus cub- cubb cubi cubs cucc cuci cuck cufc cuff cufi cui- cuif cuir cuis cuk- curb curf curi curr curs cusb cusg cusk cuss cusu f--k fbis fbrs fbus fcbs fccf fcgs fcic fcii fcsc fcuk ffcc ffff ffii ffrr ffss fgcs fibs ficc fick fics fifc fiff fifi figc figg figs fiii fiki firk firs fisc fisi fisk fiss fisu fiuk frbc frcc frfc