-al -ol a-a a-b a-c a-z aaa aab aac aal aao aau aaz ab- aba abb abc abl abo abu abz ac- aca acb acc acl aco acu acz al- ala alb alc all alo alu alz aoa aob aoc aol aoo aou au- aua aub auc aul auo auz az- aza azb azo azu azz b-u baa bab bac bal bao bau baz bba bbb bbc bbl bbo bbu bca bcb bcc bcl bco bcu bcz bla blb blc bll blo blu blz boa bob boc bol boo bou boz bua bub buc bul buo buu buz bza bzo bzu bzz c-- caa cab cac cal cao cau caz cba cbb cbc cbl cbo cbu cbz cca ccb ccc ccl cco ccu ccz cl- cla clb clc cll clo clu clz co- coa cob coc col coo cou coz cua cub cuc cul cuo cuu cuz cz- czc czo la- laa lab lac lal lao lau laz lba lbb lbc lbl lbo lbu lca lcb lcc lcl lco lcu lla llb llc lll llo llu llz loa lob loc lol loo lou loz lua lub luc lul luo luu luz lzo lzu oaa oab oac oal oao oau ob- oba obb obc obl obo obu oc- oca ocb occ ocl oco ocu ocz ola olb olc oll olo olu oo- ooa oob ooc ool ooo ou- oua ouc oul ouo oza ozo ozu ozz ua- uaa uab uac ual uao uau uaz uba ubb ubc ubl ubo ubu uca ucb ucc ucl uco ucu ula ulb ulc ull ulo ulu uoa uob uoc uol uoo uua uuc uuu uza uzb uzo uzu zaa zab zac zao zaz zbb zbc zbl zcl zco zla zo- zoa zob zoc zol zoo zou zub zuc zul zuz zzz