-al -ol a-a a-b aaa aab aak aal aao aas aau ab- aba abb abk abl abo abs abu aka akb akk akl ako aks aku al- ala alb alk all alo als alu aoa aob aok aol aoo aos aou as- asa asb ask asl aso ass asu au- aua aub auk aul auo aus b-u baa bab bak bal bao bas bau bba bbb bbk bbl bbo bbs bbu bka bkb bkk bkl bko bks bla blb blk bll blo bls blu boa bob bok bol boo bos bou bsa bsb bsk bsl bso bss bsu bua bub buk bul buo bus buu ka- kaa kab kak kal kao kas kau kba kbb kbk kbl kbo kbs kbu kkb kkk kkl kks kku kl- kla klb klo kls klu koa kob kok kol koo kos kou ksa ksb ksk ksl kso kss ksu kub kuk kul kus kuu la- laa lab lak lal lao las lau lba lbb lbk lbl lbo lbs lbu lka lkb lkl lks lla llb llk lll llo lls llu loa lob lok lol loo los lou lsa lsb lsk lsl lso lss lsu lua lub luk lul luo lus luu oaa oab oak oal oao oas oau ob- oba obb obk obl obo obs obu oka okb okk okl oko oks oku ola olb olk oll olo ols olu oo- ooa oob ook ool ooo oos os- osa osb osk osl oso oss osu ou- oua ouk oul ouo ous saa sab sak sal sao sas sau sba sbb sbk sbl sbo sbs sbu sk- ska skb skk skl sko sks sku sla slb slk sll slo sls slu soa sob sok sol soo sos sou ss- ssa ssb ssk ssl sso sss ssu sua sub suk sul suo sus suu ua- uaa uab uak ual uao uas uau uba ubb ubk ubl ubo ubs ubu uka ukb ukk ukl uku ula ulb ulk ull ulo uls ulu uoa uob uok uol uoo uos usa usb usk usl uso uss usu uua uus uuu