-er b-u bbb bbc bbe bbh bbk bbr bbu bcb bcc bce bch bck bcr bcu be- beb bec bee beh bek ber beu bhb bhc bhe bhh bhk bhr bhu bkb bkc bke bkk bkr brb bre brh brk brr bru bub buc bue buh buk bur buu c-- cbb cbc cbe cbh cbk cbr cbu ccb ccc cce cch cck ccr ccu ce- ceb cec cee ceh cek cer ceu ch- chb chc che chh chk chr chu ckb ckc ckh crb crc cre crh crk crr cru cub cuc cue cuh cuk cur cuu ebb ebc ebe ebh ebk ebr ebu ec- ecb ecc ece ech eck ecr ecu eeb eec eee eek eer ehb ehc ehe ehh ehr ehu ekb ekc eke ekh ekr eku erb erc ere erh erk err eru eu- eub euc eue eur hbb hbc hbe hbh hbk hbr hbu hcb hcc hce hch hck hcr he- heb hec hee heh hek her heu hhb hhc hhe hhh hhk hhr hhu hkb hkh hkk hkr hku hr- hrb hrc hre hrh hrk hrr hru hub huc hue huh huk hur huu kbb kbc kbe kbh kbk kbr kbu kcb kcc kce kch kck kcr kcu ke- keb kec kee keh kek ker khe khh khk khr khu kkb kkc kke kkh kkk kkr kku krc krk krr kru kub kuc kue kuh kuk kur kuu rbb rbc rbe rbh rbk rbr rbu rcb rcc rce rch rcr rcu re- reb rec ree reh rek rer reu rh- rhb rhc rhe rhh rhr rhu rkb rkc rke rkk rku rrb rrc rrh rrk rrr rru rub ruc rue ruh ruk rur ruu ubb ubc ube ubh ubk ubr ubu ucb ucc uce uch uck ucr ucu ueb uec uee ueh uer uhb uhc uhe uhh uhr uhu ukb ukc uke ukk ukr uku ur- urb urc ure urk urr uru uuc uue uur uuu

bbbb bbch bbeb bbrc bcbc bccc bcec bcer bche bcru bcuc bebb bebe bech beck becu beeb beek beer behr beke berc bere berk berr beru beuk beur bhcc bher bhur bhuu brcb brce breb brec bree brek brer brkb brrr bruc brue bruh bubb bube bubu bucc buce buch buck bucu buer bueu buhe buhr buke bukh bukk buku bur- burb bure burh burk burr buru cbbc cbcc cbce cbcr cbcu cbec cbee cber cbkr cbre cbrh ccbc cccb cccc cccu ccee cche cchr ccrc ccre ccuc cebu cec- cece ceeb ceec ceke cer- cerc cere chce chch cheb chec chee cheh chek cher cheu chkb chrb chrc chrr chub chuk chur ckbc ckbe ckch ckck cker ckrc crbc crbu crcc crce crcr cre- creb crec cree creh creu crkc crub crue cruk cub- cubb cube cucc cuce cuck cuek cuer cuk- cuke curb cure curr ebbc ebbr ebcc eber ebru ebur ecbc ecbe eccb eccc ecce eche ecrc ecrr ecru eeee eeke eerc ehcc eheh eher eheu ehre ekch ekeb ekek eker ekur erbb erbe ercc erce erch ereb erec erer erhc erhu erke errc erre erub eruc eruh erur eubc euch euer eur- eurc eure hcbc hccb hccc hcch hebb hebe hebr hech heck heeb heek heer hehe heke heku herb herc here herk herr heru heue heuk heur hhhh hkbu hkcc hree hrrc hubb hube huch huck hucu huer huhu huke hure hurk hurr huru huub kbbb kbbc kbbe kbbk kbbr kbbu kbcb kbce kbch kbck kbcr kbcu kbeb kbec kbee kbeh kbek kber kbhb kbhc kbhe kbhh kbhr kbkb kbkk kbkr kbrb kbrc kbre kbrh kbrk kbru kbub kbuc kbue kbuk kbur kbuu kcbc kcbk kcbr kcbu kccb kccc kcck kccr kccu kceb kcec kcee kceu kche kchh kchk kchr kchu kckc kckk kckr kcrc kcrh kcrr kcru kcub kcue kcuh kcuk kebb kebc kebe kebr kebu kech keck kecr keeh keek keer kehk kehr kekb kekc keke keku ker- kerb kerc kere kerk kerr keru keur khbc khbr khcb khcc khch khck kheb khec kher khhk khke khkk khkr khrk khrr khub khuk khur kkbb kkbe kkbr kkcb kkch kkck kkcr kkhb kkhh kkhk kkhr kkkk kkrb kkrc kkre kkrh kkrk kkrr kkuu krbb krbe krbk krbr krcb krcc krce krch krcu kreb krec kree kreh krek kreu krhc krkc krke krkh krkk krkr krku krrb krrc krre krrk krrr kruc krue kruh kruk krur kubb kubc kube kubr kubu kucb kucc kuce kuch kucr kuek kueu kuhu kuke kukh kukk kuku kurb kure kurk kurr kuru kuub kuuk kuur kuuu rbbb rbbr rcbc rccb rccc rchb rebb rebe rebk rebu recc rece rech reck recr recu reeb reek rehb rehe reke rere reru reue reuk reuu rhce rheb rhee rhue rrrr rubb rube rubu ruce ruch ruck ruer ruhe ruhh ruhr ruke rukh rukk ruku rurc rure ruru ubbe ubek uber ucbc uche ucrc uher uhuh ukcc ukek ukeu ukrc ukur urbe urch ure- ureh urke urre urrh uruk urur uuuu

b-r-k bbbee be-er bebek beber beche becke beckh becue beebe beech beeke beher behue beker bekke berbe berck bercu berec bereh berek berhe berk- berke berre berru beuch beuer beure bheer brebu brece brech breck breek breer breke brere breu- brrrr bruce bruch bruck bruer bruke bubbe buber bucek buchu bucku bucur buker bukk- burch burck burcu bureh burek burke burru buruc buruk ccccc cebec ceber cech ceche ceere cerbu cerc- cerce cerec cerer cerke cerre chech check cheek cheer chehr chekc cheke chere cheru cheue chher chubb chuck chueh chuek chur- chure churk churr churu chuuk crebe crece creek creer creke creu- creue cruce cruck cruke crure cubbe cubeb cuber cubub cuche cucuk cuker curce curch curer curre ebber ebure ecker eecke eeeee eheke ekker ekuku ekuru erbbe erber erech erere erkec eruke eucre eurre h-e-b he-he hebbe hebe- heber heche hecke heere heker hekk- herce herek herke herre heruk herur heuch heuer heure hhhhh hkcee hrbek hrere hubbe huber hubur hucch huche hueck huere huhuh huker hurbe hureh hurre huuru kebbe kebek keber kecer keche keech keere kehek kekec