-al -up a-a a-b a-c aaa aab aac aae aal aap aau aax ab- aba abb abc abe abl abp abu abx ac- aca acb acc ace acl acp acu acx aea aeb aec aee ael aep aeu aex al- ala alb alc ale all alp alu alx ap- apa apb apc ape apl app apu apx au- aua aub auc aue aul aup aux ax- axa axe axl axp axx b-p b-u baa bab bac bae bal bap bau bax bba bbb bbc bbe bbl bbp bbu bbx bca bcb bcc bce bcl bcp bcu bcx be- bea beb bec bee bel bep beu bex bla blb blc ble bll blp blu blx bpa bpb bpc bpe bpl bpp bpu bpx bua bub buc bue bul bup buu bux bxb bxl bxx c-- caa cab cac cae cal cap cau cax cba cbb cbc cbe cbl cbp cbu cbx cca ccb ccc cce ccl ccp ccu ccx ce- cea ceb cec cee cel cep ceu cex cl- cla clb clc cle cll clp clu clx cpa cpb cpc cpe cpl cpp cpu cpx cua cub cuc cue cul cup cuu cxc cxl cxp cxx eaa eab eac eae eal eap eau eax eba ebb ebc ebe ebl ebp ebu ebx ec- eca ecb ecc ece ecl ecu ecx eea eeb eec eee eel eep eex ela elb elc ele ell elp elu elx ep- epa epb epc epe epl epp epu epx eu- eua eub euc eue eul eup eux ex- exa exc exe exl exp exu exx l-p la- laa lab lac lae lal lap lau lax lba lbb lbc lbe lbl lbp lbu lbx lca lcb lcc lce lcl lcp lcu lcx lea leb lec lee lel lep leu lex lla llb llc lle lll llp llu lpa lpb lpc lpe lpl lpp lpu lpx lua lub luc lue lul lup luu lux lxc lxx p-p paa pab pac pae pal pap pau pax pba pbb pbc pbe pbl pbp pbu pbx pca pcb pcc pce pcl pcp pcu pcx pea peb pec pee pel pep peu pex pla plb plc ple pll plp plu plx ppa ppb ppc ppe ppl ppp ppu ppx pua pub puc pue pul pup puu pxc pxe pxl ua- uaa uab uac uae ual uap uau uba ubb ubc ube ubl ubp ubu ubx uca ucb ucc uce ucl ucp ucu uea ueb uec uee uel uep ula ulb ulc ule ull ulp ulu up- upa upb upc upe upp upu upx uua uuc uue uuu uxb uxc uxu xaa xac xal xap xau xbc xbe xbl xbx xcb xcl xcp xcx xee xel xep xeu xex xla xlb xpa xpb xpc xpe xpl xpp xue xul xup xxl xxp xxx