-al -er -ol a-a a-b aaa aab aad aae aal aao aar aau ab- aba abb abd abe abl abo abr abu ad- ada adb add ade adl ado adr adu aea aeb aed aee ael aeo aer aeu al- ala alb ald ale all alo alr alu aoa aob aod aoe aol aoo aor aou ar- ara arb ard are arl aro arr aru au- aua aub aud aue aul auo aur b-u baa bab bad bae bal bao bar bau bba bbb bbd bbe bbl bbo bbr bbu bda bdb bdd bde bdl bdo bdr bdu be- bea beb bed bee bel beo ber beu bla blb bld ble bll blo blr blu boa bob bod boe bol boo bor bou bra brb brd bre brl bro brr bru bua bub bud bue bul buo bur buu daa dab dad dae dal dao dar dau dba dbb dbd dbe dbl dbo dbr dbu dda ddb ddd dde ddl ddo ddr ddu de- dea deb ded dee del deo der deu dl- dla dlb dld dle dll dlo dlr dlu doa dob dod doe dol doo dor dou dra drb drd dre drl dro drr dru dua dub dud due dul duo dur eaa eab ead eae eal eao ear eau eba ebb ebd ebe ebl ebo ebr ebu ed- eda edb edd ede edl edo edr edu eea eeb eed eee eel eeo eer ela elb eld ele ell elo elr elu eo- eoa eob eod eoe eol eoo eor eou era erb erd ere erl ero err eru eu- eua eub eud eue eul eur la- laa lab lad lae lal lao lar lau lba lbb lbd lbe lbl lbo lbr lbu lda ldb ldd lde ldl ldo ldr ldu lea leb led lee lel leo ler leu lla llb lld lle lll llo llr llu loa lob lod loe lol loo lor lou lra lrb lrd lro lrr lru lua lub lud lue lul luo lur luu oaa oab oad oae oal oao oar oau ob- oba obb obd obe obl obo obr obu oda odb odd ode odl odo odr odu oea oeb oed oee oel oeo oer ola olb old ole oll olo olu oo- ooa oob ood ool ooo oor or- ora orb ord ore orl oro orr oru ou- oua oud oue oul ouo our ra- raa rab rad rae ral rao rar rau rba rbb rbd rbe rbl rbo rbr rbu rda rdb rdd rde rdl rdo rdr rdu re- rea reb red ree rel reo rer reu rla rld rle rll rlo rlr rlu roa rob rod roe rol roo ror rou rra rrb rrd rrl rrr rru rua rub rud rue ruo rur ruu ua- uaa uab uad uae ual uao uar uau uba ubb ube ubl ubo ubr ubu uda udb udd ude udl udo udr udu uea ueb ued uee uel uer ula ulb uld ule ull ulo ulr ulu uoa uob uod uoe uol uoo uor ur- ura urb urd ure url uro urr uru uua uue uur uuu