-al a-a a-b a-c a-z aaa aab aac aae aal aau aaz ab- aba abb abc abe abl abu abz ac- aca acb acc ace acl acu acz aea aeb aec aee ael aeu aez al- ala alb alc ale all alu alz au- aua aub auc aue aul auz az- aza azb aze azu azz b-u baa bab bac bae bal bau baz bba bbb bbc bbe bbl bbu bca bcb bcc bce bcl bcu bcz be- bea beb bec bee bel beu bez bla blb blc ble bll blu blz bua bub buc bue bul buu buz bza bze bzu bzz c-- caa cab cac cae cal cau caz cba cbb cbc cbe cbl cbu cbz cca ccb ccc cce ccl ccu ccz ce- cea ceb cec cee cel ceu cez cl- cla clb clc cle cll clu clz cua cub cuc cue cul cuu cuz cz- czc cze eaa eab eac eae eal eau eaz eba ebb ebc ebe ebl ebu ec- eca ecb ecc ece ecl ecu eea eeb eec eee eel ela elb elc ele ell elu elz eu- eua eub euc eue eul eze ezz la- laa lab lac lae lal lau laz lba lbb lbc lbe lbl lbu lca lcb lcc lce lcl lcu lea leb lec lee lel leu lez lla llb llc lle lll llu llz lua lub luc lue lul luu luz lzu ua- uaa uab uac uae ual uau uaz uba ubb ubc ube ubl ubu uca ucb ucc uce ucl ucu uea ueb uec uee uel ula ulb ulc ule ull ulu uua uuc uue uuu uza uzb uzu zaa zab zac zaz zbb zbc zbl zce zcl zea zeb zec zee zel zez zla zub zuc zul zuz zzz