-al -ol a-a a-c a-t aaa aac aaf aal aao aas aat ac- aca acc acf acl aco acs act af- afa afc aff afl afo afs aft al- ala alc alf all alo als alt aoa aoc aof aol aoo aos aot as- asa asc asf asl aso ass ast at- ata atc atf atl ato ats att c-- caa cac caf cal cao cas cat cca ccc ccf ccl cco ccs cct cfa cfc cff cfl cfo cfs cft cl- cla clc clf cll clo cls clt co- coa coc cof col coo cos cot csa csc csf csl cso css cst cta ctc ctf ctl cto cts ctt faa fac faf fal fao fas fat fca fcc fcf fcl fco fcs fct ffa ffc fff ffl ffo ffs fft fla flc flf fll flo fls flt foa foc fof fol foo fos fot fsa fsc fsf fsl fso fss fst fta ftc ftf ftl fto fts ftt la- laa lac laf lal lao las lat lca lcc lcf lcl lco lcs lct lfa lfc lff lfl lfo lfs lft lla llc llf lll llo lls llt loa loc lof lol loo los lot lsa lsc lsf lsl lso lss lst lta ltc ltf ltl lto lts ltt oaa oac oaf oal oao oas oat oc- oca occ ocf ocl oco ocs oct of- ofa ofc off ofl ofo ofs oft ola olc olf oll olo ols olt oo- ooa ooc oof ool ooo oos oot os- osa osc osf osl oso oss ost ot- ota otc otf otl oto ots ott saa sac saf sal sao sas sat sca scc scf scl sco scs sct sfa sfc sff sfl sfo sfs sft sla slc slf sll slo sls slt soa soc sof sol soo sos sot ss- ssa ssc ssf ssl sso sss sst sta stc stf stl sto sts stt taa tac taf tal tao tas tat tca tcc tcf tcl tco tcs tct tfa tfc tff tfl tfo tfs tft tla tlc tlf tll tlo tls tlt to- toa toc tof tol too tos tot tsa tsc tsf tsl tso tss tst tta ttc ttf ttl tto tts ttt