-al -ol a-a a-c a-t aaa aac aad aak aal aao aat ac- aca acc acd ack acl aco act ad- ada adc add adk adl ado adt aka akc akd akk akl ako al- ala alc ald alk all alo alt aoa aoc aod aok aol aoo aot at- ata atc atd atl ato att c-- caa cac cad cak cal cao cat cca ccc ccd cck ccl cco cct cda cdc cdd cdk cdl cdo cdt cka ckc ckd cko ckt cl- cla clc cld clk cll clo clt co- coa coc cod cok col coo cot cta ctc ctd ctk ctl cto ctt daa dac dad dak dal dao dat dca dcc dcd dck dcl dco dct dda ddc ddd ddk ddl ddo ddt dka dkc dkk dkl dko dkt dl- dla dlc dld dlk dll dlo dlt doa doc dod dok dol doo dot dta dtc dtd dtk dtl dto dtt k-t ka- kaa kac kad kak kal kao kat kca kcc kcd kck kcl kct kda kdc kdk kdl kdo kdt kkc kkk kkl kkt kl- kla klc kld klo klt koa koc kod kok kol koo kot kta ktc ktk ktl kto ktt la- laa lac lad lak lal lao lat lca lcc lcd lck lcl lco lct lda ldc ldd ldk ldl ldo ldt lka lkl lkt lla llc lld llk lll llo llt loa loc lod lok lol loo lot lta ltc ltd ltk ltl lto ltt oaa oac oad oak oal oao oat oc- oca occ ocd ock ocl oco oct oda odc odd odl odo odt oka okc okd okk okl oko ola olc old olk oll olo olt oo- ooa ooc ood ook ool ooo oot ot- ota otc otd otk otl oto ott taa tac tad tak tal tao tat tca tcc tcd tck tcl tco tct tda tdc tdd tdk tdl tdo tdt tka tkc tkk tkl tko tkt tla tlc tld tlk tll tlo tlt to- toa toc tod tok tol too tot tta ttc ttd ttk ttl tto ttt