-al -er a-a a-b a-c aaa aab aac aae aaf aal aar aau ab- aba abb abc abe abf abl abr abu ac- aca acb acc ace acf acl acr acu aea aeb aec aee aef ael aer aeu af- afa afb afc afe aff afl afr afu al- ala alb alc ale alf all alr alu ar- ara arb arc are arf arl arr aru au- aua aub auc aue auf aul aur b-u baa bab bac bae baf bal bar bau bba bbb bbc bbe bbf bbl bbr bbu bca bcb bcc bce bcf bcl bcr bcu be- bea beb bec bee bef bel ber beu bfa bfb bfc bfe bff bfl bfr bfu bla blb blc ble blf bll blr blu bra brb bre brf brl brr bru bua bub buc bue buf bul bur buu c-- caa cab cac cae caf cal car cau cba cbb cbc cbe cbf cbl cbr cbu cca ccb ccc cce ccf ccl ccr ccu ce- cea ceb cec cee cef cel cer ceu cfa cfb cfc cfe cff cfl cfr cfu cl- cla clb clc cle clf cll clr clu cra crb crc cre crf crl crr cru cua cub cuc cue cuf cul cur cuu eaa eab eac eae eaf eal ear eau eba ebb ebc ebe ebf ebl ebr ebu ec- eca ecb ecc ece ecf ecl ecr ecu eea eeb eec eee eef eel eer ef- efa efb efc efe eff efl efr ela elb elc ele elf ell elr elu era erb erc ere erf erl err eru eu- eua eub euc eue euf eul eur faa fab fac fae faf fal far fau fba fbb fbc fbe fbf fbl fbr fbu fca fcb fcc fce fcf fcl fcr fcu fea feb fec fee fef fel fer feu ffa ffc ffe fff ffl ffr ffu fla flb flc fle flf fll flr flu fra frb frc fre frf frl frr fru fua fub fue fuf ful fur fuu la- laa lab lac lae laf lal lar lau lba lbb lbc lbe lbf lbl lbr lbu lca lcb lcc lce lcf lcl lcr lcu lea leb lec lee lef lel ler leu lfa lfb lfc lfe lff lfl lfr lfu lla llb llc lle llf lll llr llu lra lrb lrc lrf lrr lru lua lub luc lue luf lul lur luu ra- raa rab rac rae raf ral rar rau rba rbb rbc rbe rbf rbl rbr rbu rca rcb rcc rce rcf rcl rcr rcu re- rea reb rec ree ref rel rer reu rfa rfb rfc rfe rff rfl rfr rfu rla rlc rle rlf rll rlr rlu rra rrb rrc rrf rrl rrr rru rua rub ruc rue ruf rur ruu ua- uaa uab uac uae uaf ual uar uau uba ubb ubc ube ubf ubl ubr ubu uca ucb ucc uce ucf ucl ucr ucu uea ueb uec uee uef uel uer ufa ufc ufe uff ufl ufr ufu ula ulb ulc ule ulf ull ulr ulu ur- ura urb urc ure urf url urr uru uua uuc uue uur uuu

a-be a-fu aaaa aaab aaac aaae aaaf aaal aaar aaba aabb aabc aabl aaca aacb aacc aace aacf aacl aacr aacu aaea aaec aafa aafb aafc aaff aafl aala aalc aale aall aalu aara aarc aare aaru abaa abab abac abae abaf abal abar abau abb- abba abbb abbe abbr abca abcb abcc abcf abcl abcr abec abee abel aber abff abla able abra abrc abua abue abuf abul acaa acab acac acae acar acba acbl acca accc acce accf accu ace- acea acec acel acer acfc acfe acfl acla aclc acle aclr aclu acr- acra acrc acre acrr acu- acue acuf acul acur aeac aeaf aecb aecl aeer aela aelc aer- aera aerc afaa afar afca afcb afcc afcu afee afel afer affa affc afla aflc afle afr- afra afrc afre afru afua afue alaa alac alae alal alar alau alb- alba albc albe albu alca alcc alce alea alec alee alef aler aleu alfa alfe all- alla alle alll allr allu alua aluf alur arab arac arae araf aral arar arau arba arbe arc- arca arce area arec aree aref arel areu arfa arfb arfc arff arfu arla arle arr- arra arrc arre arrr arru arua arub arue arul auaa aube auca auce auel auer aufc aufe aul- aula aule aulf aull aulu aur- aura aure baaa baaf baal baar baba babb babe babr babu bac- baca bacc bace bael baer bafc baff bala balc bale balf ball balu bar- bara barb barc bare barf barr baru bau- bauf baul baur bbau bbbb bbeb bbfc bblb bbrc bcaa bcar bcbc bcca bccc bccl bcec bcer bcfc bcra bcru bcuc beaf beal bear beau beba bebb bebe beca becu beeb beef beel beer befa befe beff bela bele bell belu bera berc bere berr beru beur bfca bffl blaa blab blac blae blau blcu blea bleb blee bleu blfc blrc blub blue bluf blur brab brac brae braf brau brca brcb brce brea breb brec bree bref brel brer brfc brfu brrr bruc brue bual buar buba bubb bube bubu buca bucc buce bucu buea buel buer bueu bufc bufe buff bufr bula bulb bule bull bulu bur- bura burb bure burl burr buru caaa caab caac caaf caal caba cabe cabf cabu cac- caca cacc cace cacr caec caer caeu cafa cafb cafc cafe caff cafl cafu cala calc cale calf call calu cara carb carc care carf carl carr cauc cauf caul cbac cbal cbar cbbc cbca cbcc cbce cbcl cbcr cbcu cbea cbec cbee cbef cber cbfb cbfc cblb cblc cbre cbrl ccaa ccab ccac ccaf ccar ccba ccbc ccca cccb cccc cccf cccl cccu ccee ccel ccfa ccfc ccff ccfl ccla cclc ccra ccrc ccre ccrf ccrl ccuc ceac ceal cear ceba cebu cec- ceca cece ceeb ceec ceel cef- cefa cefc cel- cela celc cele celf cell cer- cera cerc cere cerf cerl cfaa cfab