-al -ol a-a a-b a-c aaa aab aac aad aal aao aar aau ab- aba abb abc abd abl abo abr abu ac- aca acb acc acd acl aco acr acu ad- ada adb adc add adl ado adr adu al- ala alb alc ald all alo alr alu aoa aob aoc aod aol aoo aor aou ar- ara arb arc ard arl aro arr aru au- aua aub auc aud aul auo aur b-u baa bab bac bad bal bao bar bau bba bbb bbc bbd bbl bbo bbr bbu bca bcb bcc bcd bcl bco bcr bcu bda bdb bdc bdd bdl bdo bdr bdu bla blb blc bld bll blo blr blu boa bob boc bod bol boo bor bou bra brb brd brl bro brr bru bua bub buc bud bul buo bur buu c-- caa cab cac cad cal cao car cau cba cbb cbc cbd cbl cbo cbr cbu cca ccb ccc ccd ccl cco ccr ccu cda cdb cdc cdd cdl cdo cdr cdu cl- cla clb clc cld cll clo clr clu co- coa cob coc cod col coo cor cou cra crb crc crd crl cro crr cru cua cub cuc cud cul cuo cur cuu daa dab dac dad dal dao dar dau dba dbb dbc dbd dbl dbo dbr dbu dca dcb dcc dcd dcl dco dcr dcu dda ddb ddc ddd ddl ddo ddr ddu dl- dla dlb dlc dld dll dlo dlr dlu doa dob doc dod dol doo dor dou dra drb drc drd drl dro drr dru dua dub duc dud dul duo dur la- laa lab lac lad lal lao lar lau lba lbb lbc lbd lbl lbo lbr lbu lca lcb lcc lcd lcl lco lcr lcu lda ldb ldc ldd ldl ldo ldr ldu lla llb llc lld lll llo llr llu loa lob loc lod lol loo lor lou lra lrb lrc lrd lro lrr lru lua lub luc lud lul luo lur luu oaa oab oac oad oal oao oar oau ob- oba obb obc obd obl obo obr obu oc- oca ocb occ ocd ocl oco ocr ocu oda odb odc odd odl odo odr odu ola olb olc old oll olo olu oo- ooa oob ooc ood ool ooo oor or- ora orb orc ord orl oro orr oru ou- oua ouc oud oul ouo our ra- raa rab rac rad ral rao rar rau rba rbb rbc rbd rbl rbo rbr rbu rca rcb rcc rcd rcl rco rcr rcu rda rdb rdc rdd rdl rdo rdr rdu rla rlc rld rll rlo rlr rlu roa rob roc rod rol roo ror rou rra rrb rrc rrd rrl rrr rru rua rub ruc rud ruo rur ruu ua- uaa uab uac uad ual uao uar uau uba ubb ubc ubl ubo ubr ubu uca ucb ucc ucd ucl uco ucr ucu uda udb udc udd udl udo udr udu ula ulb ulc uld ull ulo ulr ulu uoa uob uoc uod uol uoo uor ur- ura urb urc urd url uro urr uru uua uuc uur uuu

a-do aaaa aaab aaac aaad aaal aaar aaba aabb aabc aabd aabl aaca aacb aacc aacd aacl aaco aacr aacu aada aadc aadu aala aalc aald aall aalo aalu aaoo aara aarc aard aaro aaru abaa abab abac abad abal abar abau abb- abba abbb abbo abbr abca abcb abcc abcd abcl abcr abda abdo abdu abla ablo aboa abob abod abol aboo abor abou abra abrc abro abua abud abul acaa acab acac acad acar acba acbl acca accc accd acco accu acda acdb acdc acla aclc aclr aclu acoa acod acol acor acou acr- acra acrc acro acrr acu- acul acuo acur adaa adab adac adad adal adao adar adba adbc adcc adda addc addd addl addo addr addu adob adoc adod adoo ador adra adro adua adub adur alaa alac alad alal alao alar alau alb- alba albc albo albu alca alcc alco ald- alda aldl aldo all- alla alll allo allr allu aloa aloc alod alol aloo alor alou alro alua alur aoba aoca aola aora aorb aoul arab arac arad aral arar arau arba arc- arca arco arda ardc ardl ardo ardu arla arlo aroa arob arod aroo aror arr- arra arrc arro arrr arru arua arub arud arul auaa auca audc audo aul- aula auld aull aulo aulu auol aur- aura aurd auro baaa baad baal baar baba babb babo babr babu bac- baca bacc baco bada badb badd bado badr badu bala balc bald ball balo balu baol bar- bara barb barc bard baro barr baru bau- baud baul baur bbad bbau bbbb bbdd bbdo bblb bbrc bcaa bcar bcbc bcca bccc bccl bcda bcor bcra bcru bcuc bd-r bdbc bddc blaa blab blac blad blau blcu bldc bldr blob bloc blod bloo blou blrc blub blud blur boab boac boad boal boar boba bobb bobo bobu boca boco bocu boda bodb bodo bodu bola bold boll bolo bolu boob booc bood bool boor bor- bora bord boro borr boru boua boud boul bour brab brac brad brao brau brca brcb brda brdo broa brob broc brod brol broo bror brou brrr bruc brud buad bual buar buba bubb bubo bubu buca bucc buco bucu buda budb budd budl budo budu bula bulb buld bull bulu buol bur- bura burb burd burl buro burr buru c-bo c-cd caaa caab caac caal caba cabo cabu cac- caca cacc caco cacr cada cadc cadd cado cadr cadu cala calc cald call calo calu caod caol caor cara carb carc card carl caro carr cauc caul cauo cbac cbal cbar cbbc cbca cbcc cbcl cbcr cbcu cbdb cbdc cbdo cblb cblc cbol cbrd cbrl ccaa ccab ccac ccad ccar ccba ccbc ccca cccb cccc cccl cccu ccdc ccdr ccla cclc ccob ccoc ccod ccra ccrc ccrl ccuc cd-r cdaa cdac cdad cdba cdda cddb cddl cddr clab clad clar clau clcd cldc cldr clob clod cloo