-al -ol a-a a-b aaa aab aad aae aal aao aap ab- aba abb abd abe abl abo abp ad- ada adb add ade adl ado adp aea aeb aed aee ael aeo aep al- ala alb ald ale all alo alp aoa aob aod aoe aol aoo aop ap- apa apb apd ape apl apo app b-p baa bab bad bae bal bao bap bba bbb bbd bbe bbl bbo bbp bda bdb bdd bde bdl bdo bdp be- bea beb bed bee bel beo bep bla blb bld ble bll blo blp boa bob bod boe bol boo bop bpa bpb bpd bpe bpl bpo bpp daa dab dad dae dal dao dap dba dbb dbd dbe dbl dbo dbp dda ddb ddd dde ddl ddo ddp de- dea deb ded dee del deo dep dl- dla dlb dld dle dll dlo dlp doa dob dod doe dol doo dop dpa dpb dpd dpe dpl dpo dpp eaa eab ead eae eal eao eap eba ebb ebd ebe ebl ebo ebp ed- eda edb edd ede edl edo edp eea eeb eed eee eel eeo eep ela elb eld ele ell elo elp eo- eoa eob eod eoe eol eoo eop ep- epa epb epd epe epl epo epp l-p la- laa lab lad lae lal lao lap lba lbb lbd lbe lbl lbo lbp lda ldb ldd lde ldl ldo ldp lea leb led lee lel leo lep lla llb lld lle lll llo llp loa lob lod loe lol loo lop lpa lpb lpd lpe lpl lpo lpp oaa oab oad oae oal oao oap ob- oba obb obd obe obl obo obp oda odb odd ode odl odo odp oea oeb oed oee oel oeo oep ola olb old ole oll olo olp oo- ooa oob ood ool ooo oop op- opa opb opd ope opl opo opp p-p paa pab pad pae pal pao pap pba pbb pbd pbe pbl pbo pbp pda pdb pdd pde pdl pdo pdp pea peb ped pee pel peo pep pla plb pld ple pll plo plp poa pob pod poe pol poo pop ppa ppb ppd ppe ppl ppo ppp