-al -ol a-a a-c aaa aac aad aak aal aao aas ac- aca acc acd ack acl aco acs ad- ada adc add adk adl ado ads aka akc akd akk akl ako aks al- ala alc ald alk all alo als aoa aoc aod aok aol aoo aos as- asa asc asd ask asl aso ass c-- caa cac cad cak cal cao cas cca ccc ccd cck ccl cco ccs cda cdc cdd cdk cdl cdo cds cka ckc ckd cko cks cl- cla clc cld clk cll clo cls co- coa coc cod cok col coo cos csa csc csd csk csl cso css daa dac dad dak dal dao das dca dcc dcd dck dcl dco dcs dda ddc ddd ddk ddl ddo dds dka dkc dkk dkl dko dks dl- dla dlc dld dlk dll dlo dls doa doc dod dok dol doo dos dsa dsc dsd dsk dsl dso dss ka- kaa kac kad kak kal kao kas kca kcc kcd kck kcl kcs kda kdc kdk kdl kdo kds kkc kkk kkl kks kl- kla klc kld klo kls koa koc kod kok kol koo kos ksa ksc ksd ksk ksl kso kss la- laa lac lad lak lal lao las lca lcc lcd lck lcl lco lcs lda ldc ldd ldk ldl ldo lds lka lkl lks lla llc lld llk lll llo lls loa loc lod lok lol loo los lsa lsc lsd lsk lsl lso lss oaa oac oad oak oal oao oas oc- oca occ ocd ock ocl oco ocs oda odc odd odl odo ods oka okc okd okk okl oko oks ola olc old olk oll olo ols oo- ooa ooc ood ook ool ooo oos os- osa osc osd osk osl oso oss saa sac sad sak sal sao sas sca scc scd sck scl sco scs sda sdc sdd sdk sdl sdo sds sk- ska skc skd skk skl sko sks sla slc sld slk sll slo sls soa soc sod sok sol soo sos ss- ssa ssc ssd ssk ssl sso sss