-al -ol a-a a-b a-t aaa aab aad aal aao aap aat ab- aba abb abd abl abo abp abt ad- ada adb add adl ado adp adt al- ala alb ald all alo alp alt aoa aob aod aol aoo aop aot ap- apa apb apd apl apo app apt at- ata atb atd atl ato atp att b-p baa bab bad bal bao bap bat bba bbb bbd bbl bbo bbp bbt bda bdb bdd bdl bdo bdp bdt bla blb bld bll blo blp blt boa bob bod bol boo bop bot bpa bpb bpd bpl bpo bpp bpt bta btb btd btl bto btp btt daa dab dad dal dao dap dat dba dbb dbd dbl dbo dbp dbt dda ddb ddd ddl ddo ddp ddt dl- dla dlb dld dll dlo dlp dlt doa dob dod dol doo dop dot dpa dpb dpd dpl dpo dpp dpt dta dtb dtd dtl dto dtp dtt l-p la- laa lab lad lal lao lap lat lba lbb lbd lbl lbo lbp lbt lda ldb ldd ldl ldo ldp ldt lla llb lld lll llo llp llt loa lob lod lol loo lop lot lpa lpb lpd lpl lpo lpp lpt lta ltb ltd ltl lto ltp ltt oaa oab oad oal oao oap oat ob- oba obb obd obl obo obp obt oda odb odd odl odo odp odt ola olb old oll olo olp olt oo- ooa oob ood ool ooo oop oot op- opa opb opd opl opo opp opt ot- ota otb otd otl oto otp ott p-p paa pab pad pal pao pap pat pba pbb pbd pbl pbo pbp pbt pda pdb pdd pdl pdo pdp pdt pla plb pld pll plo plp plt poa pob pod pol poo pop pot ppa ppb ppd ppl ppo ppp ppt pt- pta ptb ptd ptl pto ptp ptt taa tab tad tal tao tap tat tba tbb tbd tbl tbo tbp tbt tda tdb tdd tdl tdo tdp tdt tla tld tll tlo tlp tlt to- toa tob tod tol too top tot tpa tpb tpd tpl tpo tpp tpt tta ttb ttd ttl tto ttp ttt