-er b-u bbb bbc bbe bbf bbg bbk bbr bbu bcb bcc bce bcf bcg bck bcr bcu be- beb bec bee bef beg bek ber beu bfb bfc bfe bff bfg bfr bfu bgb bgc bge bgf bgg bgk bgr bgu bkb bkc bke bkf bkg bkk bkr brb bre brf brg brk brr bru bub buc bue buf bug buk bur buu c-- cbb cbc cbe cbf cbg cbk cbr cbu ccb ccc cce ccf ccg cck ccr ccu ce- ceb cec cee cef ceg cek cer ceu cfb cfc cfe cff cfg cfk cfr cfu cgb cgc cge cgg cgr cgu ckb ckc crb crc cre crf crg crk crr cru cub cuc cue cuf cug cuk cur cuu ebb ebc ebe ebf ebg ebk ebr ebu ec- ecb ecc ece ecf ecg eck ecr ecu eeb eec eee eef eeg eek eer ef- efb efc efe eff efg efr egb egc ege egf egg egr egu ekb ekc eke ekf ekg ekr eku erb erc ere erf erg erk err eru eu- eub euc eue euf eug eur fbb fbc fbe fbf fbg fbk fbr fbu fcb fcc fce fcf fcg fck fcr fcu feb fec fee fef feg fek fer feu ffc ffe fff ffg ffk ffr ffu fgb fgc fge fgf fgg fgr fkb fkc fkf fkg fkk frb frc fre frf frg frk frr fru fub fue fuf fug fuk fur fuu gbc gbe gbf gbg gbk gbr gbu gcb gcc gce gcf gcg gck gcr gcu ge- geb gec gee gef geg gek ger geu gfb gfc gfe gff gfk gfr ggb ggc ggg ggr ggu gkb grb grc gre grf grg grk grr gru gu- gub guc gue guf gug guk gur guu kbb kbc kbe kbf kbk kbr kbu kcb kcc kce kcg kck kcr kcu ke- keb kec kee kef keg kek ker kfc kff kfg kfu kgb kgc kgf kgu kkb kkc kke kkk kkr kku krc krf krg krk krr kru kub kuc kue kug kuk kur kuu rbb rbc rbe rbf rbg rbk rbr rbu rcb rcc rce rcf rcg rcr rcu re- reb rec ree ref reg rek rer reu rfb rfc rfe rff rfg rfk rfr rfu rgb rgc rge rgf rgg rgk rgr rkb rkc rke rkf rkg rkk rku rrb rrc rrf rrg rrk rrr rru rub ruc rue ruf rug ruk rur ruu ubb ubc ube ubf ubg ubk ubr ubu ucb ucc uce ucf ucg uck ucr ucu ueb uec uee uef ueg uer ufc ufe uff ufg ufr ufu ugb ugc uge ugf ugg ugk ugr ugu ukb ukc uke ukf ukk ukr uku ur- urb urc ure urf urg urk urr uru uuc uue uug uur uuu

bbbb bbeb bbfc bbrc bbrg bcbc bcbg bccc bcec bcer bcfc bcru bcuc bebb bebe beck becu beeb beef beeg beek beer befe beff begg begu beke berc bere berg berk berr beru beuk beur bfgf bgfc brcb brce breb brec bree bref breg brek brer brfc brfu brkb brrr bruc brue brug bubb bube bubu bucc buce buck bucu buer bueu bufc bufe buff bufr buge bugg buke bukk buku bur- burb bure burg burk burr buru cbbc cbcc cbce cbcr cbcu cbec cbee cbef cber cbfb cbfc cbgb cbkg cbkr cbre ccbc cccb cccc cccf cccu ccee ccfc ccff ccgc ccrc ccre ccrf ccrg ccuc cebu cec- cece ceeb ceec cef- cefc cege ceke cer- cerc cere cerf cfbc cfbr cfcb cfcf cffb cffr cfrb cfre cfrg cgcc cgcg cger cgfc ckbc ckbe ckck cker ckfr ckrc crbc crbu crcc crce crcr cre- creb crec cree creg creu crfc crkc crub crue crug cruk cub- cubb cube cucc cuce cuck cuek cuer cufc cuff cuk- cuke curb cure curf curr ebbc ebbr ebcc eber ebfc ebru ebur ecbc ecbe eccb eccc ecce ecef ecfc ecfr ecrc ecrf ecrr ecru eeee eefe eeke eerc eerg ef-g efbr efke egbe egbu egcc egcg egcr egec egee eger egfr eggb egge egre ekeb ekek eker ekfc ekur erbb erbe ercc erce ereb erec erer erfc erg- ergg erke errc erre erub eruc erur eubc euer eufc euge eur- eurc eure f--k fccf fcuk fece feck feeb feek feer fefc fefe feff fege fegg feke ferb ferc fere ferk ferr feru ffcc ffee ffff ffrr frbc frcc free frfc frub frue frug fubb fubu fuc- fuck fufc fuff fufu fuge fugu fuke fukk fuku fur- fure furg furr gbfc gc-c gcbc gccc gccf gcfc gcrg gebe gece geck geek geer gefe gege gegg gerb gere geru geue gfcf gfer ggfg gggg grbr grcc grce greb grec gree gref greg greu grrr grub grue gruf grug grur gubb gubu guck guer gufc guff gugb guge gugg gugu gurb gure gurg gurk gurr guru kbbb kbbc kbbe kbbf kbbg kbbk kbbr kbbu kbcb kbce kbck kbcr kbcu kbeb kbec kbee kbef kbek kber kbfb kbfc kbff kbfk kbfr kbgb kbge kbgg kbgr kbkb kbkf kbkg kbkk kbkr kbrb kbrc kbre kbrf kbrg kbrk kbru kbub kbuc kbue kbuf kbuk kbur kbuu kcbc kcbf kcbk kcbr kcbu kccb kccc kcck kccr kccu kceb kcec kcee kceg kceu kcfb kcfc kcfg kcgc kcgf kcgr kckc kckf kckk kckr kcrc kcrg kcrr kcru kcub kcue kcuf kcuk kebb kebc kebe kebr kebu kecg keck kecr keef keek keer kefb kefc keff kefr kege kegg kegk kegr kekb kekc keke keku ker- kerb kerc kere kerf kerk kerr keru keug keur kfbc kfbk kfcf kfcr kfeb kfeg kfer kffb kfff kffg kffk kfge kfgr kfkb kfrc kfre kfrg kfrr kfru kgbb kgbc kgbr kgcb kgcc kgce kgcr kgeb kgec kgff kgfk kggf kggg kggr kgrb kgrc kgre kgrg kgrk kgrr kkbb kkbe kkbg kkbr kkcb kkck kkcr kkeg kkfg kkfr kkgb kkgr kkkk kkrb kkrc kkre kkrf kkrk kkrr kkuu krbb krbe krbg krbk krbr krcb krcc krce krcg krcu kreb krec kree kref krek kreu krfc krfe krff krfg krkc krke krkk krkr krku krrb krrc krre krrf