-al -ol a-a a-b aaa aab aad aae aal aao aap aax ab- aba abb abd abe abl abo abp abx ad- ada adb add ade adl ado adp adx aea aeb aed aee ael aeo aep aex al- ala alb ald ale all alo alp alx aoa aob aod aoe aol aoo aop aox ap- apa apb apd ape apl apo app apx ax- axa axe axl axo axp axx b-p baa bab bad bae bal bao bap bax bba bbb bbd bbe bbl bbo bbp bbx bda bdb bdd bde bdl bdo bdp bdx be- bea beb bed bee bel beo bep bex bla blb bld ble bll blo blp blx boa bob bod boe bol boo bop box bpa bpb bpd bpe bpl bpo bpp bpx bxb bxd bxl bxo bxx daa dab dad dae dal dao dap dax dba dbb dbd dbe dbl dbo dbp dbx dda ddb ddd dde ddl ddo ddp ddx de- dea deb ded dee del deo dep dex dl- dla dlb dld dle dll dlo dlp dlx doa dob dod doe dol doo dop dox dpa dpb dpd dpe dpl dpo dpp dxd dxl dxo dxp dxx eaa eab ead eae eal eao eap eax eba ebb ebd ebe ebl ebo ebp ebx ed- eda edb edd ede edl edo edp edx eea eeb eed eee eel eeo eep eex ela elb eld ele ell elo elp elx eo- eoa eob eod eoe eol eoo eop ep- epa epb epd epe epl epo epp epx ex- exa exd exe exl exo exp exx l-p la- laa lab lad lae lal lao lap lax lba lbb lbd lbe lbl lbo lbp lbx lda ldb ldd lde ldl ldo ldp lea leb led lee lel leo lep lex lla llb lld lle lll llo llp loa lob lod loe lol loo lop lox lpa lpb lpd lpe lpl lpo lpp lpx lxd lxo lxx oaa oab oad oae oal oao oap oax ob- oba obb obd obe obl obo obp obx oda odb odd ode odl odo odp oea oeb oed oee oel oeo oep oex ola olb old ole oll olo olp oo- ooa oob ood ool ooo oop oox op- opa opb opd ope opl opo opp opx ox- oxa oxb oxo oxx p-p paa pab pad pae pal pao pap pax pba pbb pbd pbe pbl pbo pbp pbx pda pdb pdd pde pdl pdo pdp pdx pea peb ped pee pel peo pep pex pla plb pld ple pll plo plp plx poa pob pod poe pol poo pop pox ppa ppb ppd ppe ppl ppo ppp ppx pxe pxl xaa xad xal xap xbe xbl xbx xda xdb xde xed xee xel xep xex xla xlb xld xoa xod xoo xop xox xpa xpb xpd xpe xpl xpo xpp xxl xxo xxp xxx