-er a-a a-b a-c aaa aab aac aae aah aak aar aau ab- aba abb abc abe abh abk abr abu ac- aca acb acc ace ach ack acr acu aea aeb aec aee aeh aek aer aeu aha ahb ahc ahe ahh ahk ahr ahu aka akb akc ake akh akk akr aku ar- ara arb arc are arh ark arr aru au- aua aub auc aue auh auk aur b-u baa bab bac bae bah bak bar bau bba bbb bbc bbe bbh bbk bbr bbu bca bcb bcc bce bch bck bcr bcu be- bea beb bec bee beh bek ber beu bha bhb bhc bhe bhh bhk bhr bhu bka bkb bkc bke bkk bkr bra brb bre brh brk brr bru bua bub buc bue buh buk bur buu c-- caa cab cac cae cah cak car cau cba cbb cbc cbe cbh cbk cbr cbu cca ccb ccc cce cch cck ccr ccu ce- cea ceb cec cee ceh cek cer ceu ch- cha chb chc che chh chk chr chu cka ckb ckc ckh cra crb crc cre crh crk crr cru cua cub cuc cue cuh cuk cur cuu eaa eab eac eae eah eak ear eau eba ebb ebc ebe ebh ebk ebr ebu ec- eca ecb ecc ece ech eck ecr ecu eea eeb eec eee eek eer eha ehb ehc ehe ehh ehr ehu eka ekb ekc eke ekh ekr eku era erb erc ere erh erk err eru eu- eua eub euc eue eur haa hab hac hae hah hak har hau hba hbb hbc hbe hbh hbk hbr hbu hca hcb hcc hce hch hck hcr he- hea heb hec hee heh hek her heu hha hhb hhc hhe hhh hhk hhr hhu hka hkb hkh hkk hkr hku hr- hra hrb hrc hre hrh hrk hrr hru hua hub huc hue huh huk hur huu ka- kaa kab kac kae kah kak kar kau kba kbb kbc kbe kbh kbk kbr kbu kca kcb kcc kce kch kck kcr kcu ke- kea keb kec kee keh kek ker kha khe khh khk khr khu kkb kkc kke kkh kkk kkr kku kra krc krk krr kru kub kuc kue kuh kuk kur kuu ra- raa rab rac rae rah rak rar rau rba rbb rbc rbe rbh rbk rbr rbu rca rcb rcc rce rch rcr rcu re- rea reb rec ree reh rek rer reu rh- rha rhb rhc rhe rhh rhr rhu rkb rkc rke rkk rku rra rrb rrc rrh rrk rrr rru rua rub ruc rue ruh ruk rur ruu ua- uaa uab uac uae uah uak uar uau uba ubb ubc ube ubh ubk ubr ubu uca ucb ucc uce uch uck ucr ucu uea ueb uec uee ueh uer uha uhb uhc uhe uhh uhr uhu uka ukb ukc uke ukk ukr uku ur- ura urb urc ure urk urr uru uua uuc uue uur uuu

a-ak a-be a-ha aaaa aaab aaac aaae aaah aaar aaba aabb aabc aabh aaca aacb aacc aace aach aack aacr aacu aaea aaec aaha aahk aaka aake aaku aara aarc aare aaru abaa abab abac abae abak abar abau abb- abba abbb abbe abbr abca abcb abcc abch abcr abec abee aber abha abhr abra abrc abua abue abuk acaa acab acac acae acar acba acca accc acce acch accu ace- acea acec aceh acek acer acha ache achh achr achu acke acr- acra acrc acre acrr acu- acue acur aeac aecb aeer aeka aer- aera aerc ahab ahac ahah ahar ahau ahha ahra ahrc ahre ahrr ahua akaa akae akah akar akca akee aker akeu akha akka akku akr- akra akre akua arab arac arae arah arak arar arau arba arbe arbh arc- arca arce arch area arec aree areh arek areu arh- arka arke arkh arr- arra arrc arre arrh arrk arrr arru arua arub arue auaa aube auca auce auch auer auke aur- aura aure baaa baah baak baar baba babb babe babr babu bac- baca bacc bace bach back baek baer baha bahr bahu bak- baka bake bakh bakr baku bar- bara barb barc bare barh bark barr baru bau- bauk baur bbau bbbb bbch bbeb bbrc bcaa bcar bcbc bcca bccc bcec bcer bche bcra bcru bcuc beah beak bear beau beba bebb bebe beca bech beck becu beeb beek beer behr beka beke bera berc bere berk berr beru beuk beur bhar bhca bhcc bher bhra bhur bhuu brab brac brae brah brak brau brca brcb brce brea breb brec bree brek brer brka brkb brrr bruc brue bruh buar buba bubb bube bubu buca bucc buce buch buck bucu buea buer bueu buha buhe buhr buka buke bukh bukk buku bur- bura burb bure burh burk burr buru caaa caab caac caah caba cabe cabu cac- caca cacc cace cach cack cacr caec caer caeu caha cahe caka cake cara carb carc care cark carr cauc cauk cbac cbar cbbc cbca cbcc cbce cbcr cbcu cbea cbec cbee cber cbha cbka cbkr cbre cbrh ccaa ccab ccac ccar ccba ccbc ccca cccb cccc cccu ccee ccha cche cchr ccra ccrc ccre ccuc ceac cear ceba cebu cec- ceca cece ceeb ceec ceke cer- cera cerc cere chaa chab chac chae chah chak char chau chca chce chch chea cheb chec chee cheh chek cher cheu chha chka chkb chra chrb chrc chrr chua chub chuk chur ckac ckbc ckbe ckch ckck cker ckrc crab crac crar crau crbc crbu crca crcc crce crcr cre- crea creb crec cree creh creu crkc crub crue cruk cuau cub- cuba cubb cube cuca cucc cuce cuck cuek cuer cuk- cuka cuke cura curb cure curr eaba eabh eaca eacc each eaec eara earb eare earh ebac ebba ebbc ebbr ebcc eber ebru ebur ecaa ecac ecar ecbc ecbe ecca eccb eccc ecce echa eche ecka ecra ecrc ecrr ecru ecua eeca eeea eeee eeka eeke eera eerc ehaa ehcc ehea