-al -ol a-a a-c a-t aaa aac aad aal aao aas aat ac- aca acc acd acl aco acs act ad- ada adc add adl ado ads adt al- ala alc ald all alo als alt aoa aoc aod aol aoo aos aot as- asa asc asd asl aso ass ast at- ata atc atd atl ato ats att c-- caa cac cad cal cao cas cat cca ccc ccd ccl cco ccs cct cda cdc cdd cdl cdo cds cdt cl- cla clc cld cll clo cls clt co- coa coc cod col coo cos cot csa csc csd csl cso css cst cta ctc ctd ctl cto cts ctt daa dac dad dal dao das dat dca dcc dcd dcl dco dcs dct dda ddc ddd ddl ddo dds ddt dl- dla dlc dld dll dlo dls dlt doa doc dod dol doo dos dot dsa dsc dsd dsl dso dss dst dta dtc dtd dtl dto dts dtt la- laa lac lad lal lao las lat lca lcc lcd lcl lco lcs lct lda ldc ldd ldl ldo lds ldt lla llc lld lll llo lls llt loa loc lod lol loo los lot lsa lsc lsd lsl lso lss lst lta ltc ltd ltl lto lts ltt oaa oac oad oal oao oas oat oc- oca occ ocd ocl oco ocs oct oda odc odd odl odo ods odt ola olc old oll olo ols olt oo- ooa ooc ood ool ooo oos oot os- osa osc osd osl oso oss ost ot- ota otc otd otl oto ots ott saa sac sad sal sao sas sat sca scc scd scl sco scs sct sda sdc sdd sdl sdo sds sdt sla slc sld sll slo sls slt soa soc sod sol soo sos sot ss- ssa ssc ssd ssl sso sss sst sta stc std stl sto sts stt taa tac tad tal tao tas tat tca tcc tcd tcl tco tcs tct tda tdc tdd tdl tdo tds tdt tla tlc tld tll tlo tls tlt to- toa toc tod tol too tos tot tsa tsc tsd tsl tso tss tst tta ttc ttd ttl tto tts ttt