-al -ol a-a a-c aaa aac aad aak aal aan aao aar ac- aca acc acd ack acl acn aco acr ad- ada adc add adk adl adn ado adr aka akc akd akk akl akn ako akr al- ala alc ald alk all aln alo alr an- ana anc and ank anl ann ano anr aoa aoc aod aok aol aon aoo aor ar- ara arc ard ark arl arn aro arr c-- caa cac cad cak cal can cao car cca ccc ccd cck ccl ccn cco ccr cda cdc cdd cdk cdl cdn cdo cdr cka ckc ckd cko cl- cla clc cld clk cll cln clo clr cn- cna cnc cnd cnl cnn cno cnr co- coa coc cod cok col con coo cor cra crc crd crk crl crn cro crr daa dac dad dak dal dan dao dar dca dcc dcd dck dcl dcn dco dcr dda ddc ddd ddk ddl ddn ddo ddr dka dkc dkk dkl dko dkr dl- dla dlc dld dlk dll dlo dlr dna dnc dnd dnk dnl dnn dno dnr doa doc dod dok dol don doo dor dra drc drd drk drl drn dro drr ka- kaa kac kad kak kal kan kao kar kca kcc kcd kck kcl kcn kcr kda kdc kdk kdl kdo kdr kkc kkk kkl kkn kkr kl- kla klc kld klo klr kn- kna knc knd knk knl knn kno knr koa koc kod kok kol kon koo kor kra krc krd krk krl krn kro krr la- laa lac lad lak lal lan lao lar lca lcc lcd lck lcl lcn lco lcr lda ldc ldd ldk ldl ldn ldo ldr lka lkl lkr lla llc lld llk lll lln llo llr lna lnc lnd lnk lnl lnn lno lnr loa loc lod lok lol lon loo lor lra lrc lrd lrk lrn lro lrr naa nac nad nak nal nan nao nar nca ncc ncd nck ncl ncn nco ncr nda ndc ndd ndk ndl ndn ndo ndr nka nkc nkk nkn nko nkr nla nlc nld nlk nll nln nlo nlr nna nnc nnk nnl nnn nno no- noa noc nod nok nol non noo nor nra nrc nrd nrk nrl nrn nro nrr oaa oac oad oak oal oan oao oar oc- oca occ ocd ock ocl ocn oco ocr oda odc odd odl odn odo odr oka okc okd okk okl oko okr ola olc old olk oll oln olo on- ona onc ond onk onl onn ono onr oo- ooa ooc ood ook ool oon ooo oor or- ora orc ord ork orl orn oro orr ra- raa rac rad rak ral ran rao rar rca rcc rcd rcl rcn rco rcr rda rdc rdd rdl rdn rdo rdr rkc rkk rko rla rlc rld rll rln rlo rlr rna rnc rnd rnn rno rnr roa roc rod rok rol ron roo ror rra rrc rrd rrk rrl rrn rrr