-al -ol a-a a-c aaa aac aak aal aan aao aar ac- aca acc ack acl acn aco acr aka akc akk akl akn ako akr al- ala alc alk all aln alo alr an- ana anc ank anl ann ano anr aoa aoc aok aol aon aoo aor ar- ara arc ark arl arn aro arr c-- caa cac cak cal can cao car cca ccc cck ccl ccn cco ccr cka ckc cko cl- cla clc clk cll cln clo clr cn- cna cnc cnl cnn cno cnr co- coa coc cok col con coo cor cra crc crk crl crn cro crr ka- kaa kac kak kal kan kao kar kca kcc kck kcl kcn kcr kkc kkk kkl kkn kkr kl- kla klc klo klr kn- kna knc knk knl knn kno knr koa koc kok kol kon koo kor kra krc krk krl krn kro krr la- laa lac lak lal lan lao lar lca lcc lck lcl lcn lco lcr lka lkl lkr lla llc llk lll lln llo llr lna lnc lnk lnl lnn lno lnr loa loc lok lol lon loo lor lra lrc lrk lrn lro lrr naa nac nak nal nan nao nar nca ncc nck ncl ncn nco ncr nka nkc nkk nkn nko nkr nla nlc nlk nll nln nlo nlr nna nnc nnk nnl nnn nno no- noa noc nok nol non noo nor nra nrc nrk nrl nrn nro nrr oaa oac oak oal oan oao oar oc- oca occ ock ocl ocn oco ocr oka okc okk okl oko okr ola olc olk oll oln olo on- ona onc onk onl onn ono onr oo- ooa ooc ook ool oon ooo oor or- ora orc ork orl orn oro orr ra- raa rac rak ral ran rao rar rca rcc rcl rcn rco rcr rkc rkk rko rla rlc rll rln rlo rlr rna rnc rnn rno rnr roa roc rok rol ron roo ror rra rrc rrk rrl rrn rrr