-al -ic a-a a-b a-c a-i aaa aab aac aai aal aar aau aax ab- aba abb abc abi abl abr abu abx ac- aca acb acc aci acl acr acu acx ai- aia aib aic aii ail air aiu aix al- ala alb alc ali all alr alu alx ar- ara arb arc ari arl arr aru arx au- aua aub auc aui aul aur aux ax- axa axi axl axr axx b-u baa bab bac bai bal bar bau bax bba bbb bbc bbi bbl bbr bbu bbx bca bcb bcc bci bcl bcr bcu bcx bi- bia bib bic bii bil bir biu bix bla blb blc bli bll blr blu blx bra brb bri brl brr bru brx bua bub buc bui bul bur buu bux bxb bxi bxl bxx c-- caa cab cac cai cal car cau cax cba cbb cbc cbi cbl cbr cbu cbx cca ccb ccc cci ccl ccr ccu ccx ci- cia cib cic cii cil cir ciu cix cl- cla clb clc cli cll clr clu clx cra crb crc cri crl crr cru crx cua cub cuc cui cul cur cuu cxc cxi cxl cxr cxx ia- iaa iab iac iai ial iar iau iba ibb ibc ibi ibl ibr ibu ibx ica icb icc ici icl icr icu iia iib iic iii iil iir iiu iix il- ila ilb ilc ili ill ilr ilu ilx ir- ira irb irc iri irl irr iru irx iu- iua iub iuc iui iur ixc ixi ixl la- laa lab lac lai lal lar lau lax lba lbb lbc lbi lbl lbr lbu lbx lca lcb lcc lci lcl lcr lcu lcx lia lib lic lii lil lir liu lix lla llb llc lli lll llr llu lra lrb lrc lri lrr lru lua lub luc lui lul lur luu lux lxc lxi lxr lxx ra- raa rab rac rai ral rar rau rax rba rbb rbc rbi rbl rbr rbu rbx rca rcb rcc rci rcl rcr rcu rcx ria rib ric rii ril rir rix rla rlc rli rll rlr rlu rra rrb rrc rri rrl rrr rru rua rub ruc rui rur ruu rux rxr ua- uaa uab uac uai ual uar uau uba ubb ubc ubi ubl ubr ubu ubx uca ucb ucc uci ucl ucr ucu uia uib uic uii uil uir uiu ula ulb ulc uli ull ulr ulu ur- ura urb urc uri url urr uru urx uua uuc uur uuu uxb uxc uxr uxu xaa xac xal xar xau xbc xbl xbr xbx xcb xci xcl xcr xcx xia xic xii xiu xix xla xlb xli xlr xrc xrx xui xul xxi xxl xxx