-al -ol a-a a-b a-c a-t aaa aab aac aad aae aal aao aap aas aat ab- aba abb abc abd abe abl abo abp abs abt ac- aca acb acc acd ace acl aco acp acs act ad- ada adb adc add ade adl ado adp ads adt aea aeb aec aed aee ael aeo aep aes aet al- ala alb alc ald ale all alo alp als alt aoa aob aoc aod aoe aol aoo aop aos aot ap- apa apb apc apd ape apl apo app aps apt as- asa asb asc asd ase asl aso asp ass ast at- ata atb atc atd ate atl ato atp ats att b-p baa bab bac bad bae bal bao bap bas bat bba bbb bbc bbd bbe bbl bbo bbp bbs bbt bca bcb bcc bcd bce bcl bco bcp bcs bct bda bdb bdc bdd bde bdl bdo bdp bds bdt be- bea beb bec bed bee bel beo bep bes bet bla blb blc bld ble bll blo blp bls blt boa bob boc bod boe bol boo bop bos bot bpa bpb bpc bpd bpe bpl bpo bpp bps bpt bsa bsb bsc bsd bse bsl bso bsp bss bst bta btb btc btd bte btl bto btp bts btt c-- caa cab cac cad cae cal cao cap cas cat cba cbb cbc cbd cbe cbl cbo cbp cbs cbt cca ccb ccc ccd cce ccl cco ccp ccs cct cda cdb cdc cdd cde cdl cdo cdp cds cdt ce- cea ceb cec ced cee cel ceo cep ces cet cl- cla clb clc cld cle cll clo clp cls clt co- coa cob coc cod coe col coo cop cos cot cpa cpb cpc cpd cpe cpl cpo cpp cps cpt csa csb csc csd cse csl cso csp css cst cta ctb ctc ctd cte ctl cto ctp cts ctt daa dab dac dad dae dal dao dap das dat dba dbb dbc dbd dbe dbl dbo dbp dbs dbt dca dcb dcc dcd dce dcl dco dcp dcs dct dda ddb ddc ddd dde ddl ddo ddp dds ddt de- dea deb dec ded dee del deo dep des det dl- dla dlb dlc dld dle dll dlo dlp dls dlt doa dob doc dod doe dol doo dop dos dot dpa dpb dpc dpd dpe dpl dpo dpp dps dpt dsa dsb dsc dsd dse dsl dso dsp dss dst dta dtb dtc dtd dte dtl dto dtp dts dtt eaa eab eac ead eae eal eao eap eas eat eba ebb ebc ebd ebe ebl ebo ebp ebs ebt ec- eca ecb ecc ecd ece ecl eco ecs ect ed- eda edb edc edd ede edl edo edp eds edt eea eeb eec eed eee eel eeo eep ees eet ela elb elc eld ele ell elo elp els elt eo- eoa eob eoc eod eoe eol eoo eop eos eot ep- epa epb epc epd epe epl epo epp eps ept es- esa esb esc esd ese esl eso esp ess est eta etb etc etd ete etl eto etp ets ett l-p la- laa lab lac lad lae lal lao lap las lat lba lbb lbc lbd lbe lbl lbo lbp lbs lbt lca lcb lcc lcd lce lcl lco lcp lcs lct lda ldb ldc ldd lde ldl ldo ldp lds ldt lea leb lec led lee lel leo lep les let lla llb llc lld lle lll llo llp lls llt loa lob loc lod loe lol loo lop los lot lpa lpb lpc lpd lpe lpl lpo lpp lps lpt lsa lsb lsc lsd lse lsl lso lsp lss lst lta ltb ltc ltd lte ltl lto ltp lts ltt oaa oab oac oad oae oal oao oap oas oat ob- oba obb obc obd obe obl obo obp obs obt oc- oca ocb occ ocd ocl oco ocp ocs oct oda odb odc odd ode odl odo odp ods odt oea oeb oec oed oee oel oeo oep oes oet ola olb olc old ole oll olo olp ols olt oo- ooa oob ooc ood ool ooo oop oos oot op- opa opb opc opd ope opl opo opp ops opt os- osa osb osc osd ose osl oso osp oss ost ot- ota otb otc otd ote otl oto otp ots ott p-p paa pab pac pad pae pal pao pap pas pat pba pbb pbc pbd pbe pbl pbo pbp pbs pbt pca pcb pcc pcd pce pcl pco pcp pcs pct pda pdb pdc pdd pde pdl pdo pdp pds pdt pea peb pec ped pee pel peo pep pes pet pla plb plc pld ple pll plo plp pls plt poa pob poc pod poe pol poo pop pos pot ppa ppb ppc ppd ppe ppl ppo ppp pps ppt ps- psa psb psc psd pse psl pso psp pss pst pt- pta ptb ptc ptd pte ptl pto ptp pts ptt saa sab sac sad sae sal sao sap sas sat sba sbb sbc sbd sbe sbl sbo sbp sbs sbt sca scb scc scd sce scl sco scp scs sct sda sdb sdc sdd sde sdl sdo sdp sds sdt se- sea seb sec sed see sel seo sep ses set sla slb slc sld sle sll slo slp sls slt soa sob soc sod soe sol soo sop sos sot spa spb spc spd spe spl spo spp sps spt ss- ssa ssb ssc ssd sse ssl sso ssp sss sst sta stb stc std ste stl sto stp sts stt taa tab tac tad tae tal tao tap tas tat tba tbb tbc tbd tbe tbl tbo tbp tbs tbt tca tcb tcc tcd tce tcl tco tcp tcs tct tda tdb tdc tdd tde tdl tdo tdp tds tdt te- tea teb tec ted tee tel teo tep tes tet tla tlc tld tle tll tlo tlp tls tlt to- toa tob toc