-al -ol a-a a-b a-c aaa aab aac aad aah aal aao aar aau ab- aba abb abc abd abh abl abo abr abu ac- aca acb acc acd ach acl aco acr acu ad- ada adb adc add adh adl ado adr adu aha ahb ahc ahd ahh ahl aho ahr ahu al- ala alb alc ald alh all alo alr alu aoa aob aoc aod aoh aol aoo aor aou ar- ara arb arc ard arh arl aro arr aru au- aua aub auc aud auh aul auo aur b-u baa bab bac bad bah bal bao bar bau bba bbb bbc bbd bbh bbl bbo bbr bbu bca bcb bcc bcd bch bcl bco bcr bcu bda bdb bdc bdd bdh bdl bdo bdr bdu bha bhb bhc bhd bhh bhl bho bhr bhu bla blb blc bld blh bll blo blr blu boa bob boc bod boh bol boo bor bou bra brb brd brh brl bro brr bru bua bub buc bud buh bul buo bur buu c-- caa cab cac cad cah cal cao car cau cba cbb cbc cbd cbh cbl cbo cbr cbu cca ccb ccc ccd cch ccl cco ccr ccu cda cdb cdc cdd cdh cdl cdo cdr cdu ch- cha chb chc chd chh chl cho chr chu cl- cla clb clc cld clh cll clo clr clu co- coa cob coc cod coh col coo cor cou cra crb crc crd crh crl cro crr cru cua cub cuc cud cuh cul cuo cur cuu daa dab dac dad dah dal dao dar dau dba dbb dbc dbd dbh dbl dbo dbr dbu dca dcb dcc dcd dcl dco dcr dcu dda ddb ddc ddd ddh ddl ddo ddr ddu dh- dha dhb dhc dhd dhh dhl dho dhr dhu dl- dla dlb dlc dld dlh dll dlo dlr dlu doa dob doc dod doh dol doo dor dou dra drb drc drd drl dro drr dru dua dub duc dud duh dul duo dur haa hab hac had hah hal hao har hau hba hbb hbc hbd hbh hbl hbo hbr hbu hca hcb hcc hcd hch hcl hco hcr hda hdb hdc hdd hdh hdl hdo hdr hdu hha hhb hhc hhd hhh hhl hho hhr hhu hla hlb hlc hld hlh hll hlo hlr hlu hoa hob hoc hod hoh hol hoo hor hou hr- hra hrb hrc hrd hrh hrl hro hrr hru hua hub huc hud huh hul huo hur huu la- laa lab lac lad lah lal lao lar lau lba lbb lbc lbd lbh lbl lbo lbr lbu lca lcb lcc lcd lch lcl lco lcr lcu lda ldb ldc ldd ldh ldl ldo ldr ldu lha lhb lhc lhd lhh lho lhr lhu lla llb llc lld lll llo llr llu loa lob loc lod loh lol loo lor lou lra lrb lrc lrd lrh lro lrr lru lua lub luc lud luh lul luo lur luu oaa oab oac oad oah oal oao oar oau ob- oba obb obc obd obh obl obo obr obu oc- oca ocb occ ocd och ocl oco ocr ocu oda odb odc odd odh odl odo odr odu oha ohc ohd ohh ohl oho ohr ohu ola olb olc old oll olo olu oo- ooa oob ooc ood ooh ool ooo oor or- ora orb orc ord orh orl oro orr oru ou- oua ouc oud ouh oul ouo our ra- raa rab rac rad rah ral rao rar rau rba rbb rbc rbd rbh rbl rbo rbr rbu rca rcb rcc rcd rch rcl rco rcr rcu rda rdb rdc rdd rdh rdl rdo rdr rdu rh- rha rhb rhc rhd rhh rhl rho rhr rhu rla rlc rld rlh rll rlo rlr rlu roa rob roc rod roh rol roo ror rou rra rrb rrc rrd rrh rrl rrr rru rua rub ruc rud ruh ruo rur ruu ua- uaa uab uac uad uah ual uao uar uau uba ubb ubc ubh ubl ubo ubr ubu uca ucb ucc ucd uch ucl uco ucr ucu uda udb udc udd udl udo udr udu uha uhb uhc uhd uhh uhl uho uhr uhu 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