-al -ol a-a a-b a-c a-t aaa aab aac aad aae aak aal aao aap aat ab- aba abb abc abd abe abk abl abo abp abt ac- aca acb acc acd ace ack acl aco acp act ad- ada adb adc add ade adk adl ado adp adt aea aeb aec aed aee aek ael aeo aep aet aka akb akc akd ake akk akl ako akp al- ala alb alc ald ale alk all alo alp alt aoa aob aoc aod aoe aok aol aoo aop aot ap- apa apb apc apd ape apk apl apo app apt at- ata atb atc atd ate atl ato atp att b-p baa bab bac bad bae bak bal bao bap bat bba bbb bbc bbd bbe bbk bbl bbo bbp bbt bca bcb bcc bcd bce bck bcl bco bcp bct bda bdb bdc bdd bde bdk bdl bdo bdp bdt be- bea beb bec bed bee bek bel beo bep bet bka bkb bkc bke bkk bkl bko bkp bkt bla blb blc bld ble blk bll blo blp blt boa bob boc bod boe bok bol boo bop bot bpa bpb bpc bpd bpe bpl bpo bpp bpt bta btb btc btd bte btk btl bto btp btt c-- caa cab cac cad cae cak cal cao cap cat cba cbb cbc cbd cbe cbk cbl cbo cbp cbt cca ccb ccc ccd cce cck ccl cco ccp cct cda cdb cdc cdd cde cdk cdl cdo cdp cdt ce- cea ceb cec ced cee cek cel ceo cep cet cka ckb ckc ckd cko ckt cl- cla clb clc cld cle clk cll clo clp clt co- coa cob coc cod coe cok col coo cop cot cpa cpb cpc cpd cpe cpk cpl cpo cpp cpt cta ctb ctc ctd cte ctk ctl cto ctp ctt daa dab dac dad dae dak dal dao dap dat dba dbb dbc dbd dbe dbk dbl dbo dbp dbt dca dcb dcc dcd dce dck dcl dco dcp dct dda ddb ddc ddd dde ddk ddl ddo ddp ddt de- dea deb dec ded dee dek del deo dep det dka dkb dkc dke dkk dkl dko dkp dkt dl- dla dlb dlc dld dle dlk dll dlo dlp dlt doa dob doc dod doe dok dol doo dop dot dpa dpb dpc dpd dpe dpk dpl dpo dpp dpt dta dtb dtc dtd dte dtk dtl dto dtp dtt eaa eab eac ead eae eak eal eao eap eat eba ebb ebc ebd ebe ebk ebl ebo ebp ebt ec- eca ecb ecc ecd ece eck ecl eco ect ed- eda edb edc edd ede edk edl edo edp edt eea eeb eec eed eee eek eel eeo eep eet eka ekb ekc ekd eke ekl eko ekp ekt ela elb elc eld ele elk ell elo elp elt eo- eoa eob eoc eod eoe eok eol eoo eop eot ep- epa epb epc epd epe epl epo epp ept eta etb etc etd ete etk etl eto etp ett k-t ka- kaa kab kac kad kae kak kal kao kap kat kba kbb kbc kbd kbe kbk kbl kbo kbp kca kcb kcc kcd kce kck kcl kcp kct kda kdb kdc kde kdk kdl kdo kdp kdt ke- kea keb kec ked kee kek kel keo kep ket kkb kkc kke kkk kkl kkp kkt kl- kla klb klc kld klo klt koa kob koc kod koe kok kol koo kop kot kpa kpc kpd kpe kpk kpl kpo kpp kpt kta ktb ktc kte ktk ktl kto ktp ktt l-p la- laa lab lac lad lae lak lal lao lap lat lba lbb lbc lbd lbe lbk lbl lbo lbp lbt lca lcb lcc lcd lce lck lcl lco lcp lct lda ldb ldc ldd lde ldk ldl ldo ldp ldt lea leb lec led lee lek lel leo lep let lka lkb lkl lkp lkt lla llb llc lld lle llk lll llo llp llt loa lob loc lod loe lok lol loo lop lot lpa lpb lpc lpd lpe lpk lpl lpo lpp lpt lta ltb ltc ltd lte ltk ltl lto ltp ltt oaa oab oac oad oae oak oal oao oap oat ob- oba obb obc obd obe obk obl obo obp obt oc- oca ocb occ ocd ock ocl oco ocp oct oda odb odc odd ode odl odo odp odt oea oeb oec oed oee oel oeo oep oet oka okb okc okd oke okk okl oko okp ola olb olc old ole olk oll olo olp olt oo- ooa oob ooc ood ook ool ooo oop oot op- opa opb opc opd ope opk opl opo opp opt ot- ota otb otc otd ote otk otl oto otp ott p-p paa pab pac pad pae pak pal pao pap pat pba pbb pbc pbd pbe pbk pbl pbo pbp pbt pca pcb pcc pcd pce pck pcl pco pcp pct pda pdb pdc pdd pde pdk pdl pdo pdp pdt pea peb pec ped pee pek pel peo pep pet pka pkb pkc pkd pke pkl pko pkp pkt pla plb plc pld ple plk pll plo plp plt poa pob poc pod poe pok pol poo pop pot ppa ppb ppc ppd ppe ppk ppl ppo ppp ppt pt- pta ptb ptc ptd pte ptk ptl pto ptp ptt taa tab tac tad tae tak tal tao tap tat tba tbb tbc tbd tbe tbk tbl tbo tbp tbt tca tcb tcc tcd tce tck tcl tco tcp tct tda tdb tdc tdd tde tdk tdl tdo tdp tdt te- tea teb tec ted tee tek tel teo tep tet tka tkb tkc tke tkk tkl tko tkp tkt tla tlc tld tle tlk tll tlo tlp tlt to- toa tob toc tod toe tok tol too top tot tpa tpb tpc tpd tpe tpk tpl tpo tpp tpt tta ttb ttc ttd tte ttk ttl tto