-al -er -up a-a a-b aaa aab aae aal aap aar aau aax ab- aba abb abe abl abp abr abu abx aea aeb aee ael aep aer aeu aex al- ala alb ale all alp alr alu alx ap- apa apb ape apl app apr apu apx ar- ara arb are arl arp arr aru arx au- aua aub aue aul aup aur aux ax- axa axe axl axp axr axx b-p b-u baa bab bae bal bap bar bau bax bba bbb bbe bbl bbp bbr bbu bbx be- bea beb bee bel bep ber beu bex bla blb ble bll blp blr blu blx bpa bpb bpe bpl bpp bpr bpu bpx bra brb bre brl brp brr bru brx bua bub bue bul bup bur buu bux bxb bxl bxx eaa eab eae eal eap ear eau eax eba ebb ebe ebl ebp ebr ebu ebx eea eeb eee eel eep eer eex ela elb ele ell elp elr elu elx ep- epa epb epe epl epp epr epu epx era erb ere erl erp err eru eu- eua eub eue eul eup eur eux ex- exa exe exl exp exr exu exx l-p la- laa lab lae lal lap lar lau lax lba lbb lbe lbl lbp lbr lbu lbx lea leb lee lel lep ler leu lex lla llb lle lll llp llr llu lpa lpb lpe lpl lpp lpr lpu lpx lra lrb lrp lrr lru lua lub lue lul lup lur luu lux lxr lxx p-p paa pab pae pal pap par pau pax pba pbb pbe pbl pbp pbr pbu pbx pea peb pee pel pep per peu pex pla plb ple pll plp plr plu plx ppa ppb ppe ppl ppp ppr ppu ppx pra prb pre prl prp prr pru prx pua pub pue pul pup pur puu pxe pxl pxr ra- raa rab rae ral rap rar rau rax rba rbb rbe rbl rbp rbr rbu rbx re- rea reb ree rel rep rer reu rex rla rle rll rlp rlr rlu rpa rpb rpe rpl rpp rpr rpu rpx rra rrb rrl rrp rrr rru rua rub rue rup rur ruu rux rxp rxr ua- uaa uab uae ual uap uar uau uba ubb ube ubl ubp ubr ubu ubx uea ueb uee uel uep uer ula ulb ule ull ulp ulr ulu up- upa upb upe upp upr upu upx ur- ura urb ure url urp urr uru urx uua uue uur uuu uxb uxr uxu xaa xal xap xar xau xbe xbl xbr xbx xee xel xep xer xeu xex xla xlb xlr xpa xpb xpe xpl xpp xrx xue xul xup xxl xxp xxx