-al a-a a-b a-i aaa aab aae aag aai aal aau aax ab- aba abb abe abg abi abl abu abx aea aeb aee aeg aei ael aeu aex ag- aga agb age agg agi agl agu agx ai- aia aib aie aig aii ail aiu aix al- ala alb ale alg ali all alu alx au- aua aub aue aug aui aul aux ax- axa axe axi axl axx b-u baa bab bae bag bai bal bau bax bba bbb bbe bbg bbi bbl bbu bbx be- bea beb bee beg bei bel beu bex bga bgb bge bgg bgi bgl bgu bgx bi- bia bib bie big bii bil biu bix bla blb ble blg bli bll blu blx bua bub bue bug bui bul buu bux bxb bxi bxl bxx eaa eab eae eag eai eal eau eax eba ebb ebe ebg ebi ebl ebu ebx eea eeb eee eeg eel eex ega egb ege egg egi egl egu egx eia eib eie eig eii eil eiu eix ela elb ele elg eli ell elu elx eu- eua eub eue eug eui eul eux ex- exa exe exi exl exu exx gaa gab gae gag gai gal gau gba gbe gbg gbi gbl gbu gbx ge- gea geb gee geg gei gel geu gex gga ggb ggg ggi ggu gia gib gie gig gii gil giu gla glb gle glg gli gll glu glx gu- gua gub gue gug gui gul guu gxa gxl ia- iaa iab iae iag iai ial iau iba ibb ibe ibg ibi ibl ibu ibx ie- iea iee ieg iei iel iex iga igb ige igg igi igl igu iia iib iie iii iil iiu iix il- ila ilb ile ilg ili ill ilu ilx iu- iua iub iue iug iui ixe ixi ixl la- laa lab lae lag lai lal lau lax lba lbb lbe lbg lbi lbl lbu lbx lea leb lee leg lei lel leu lex lga lgb lge lgg lgi lgl lgu lia lib lie lig lii lil liu lix lla llb lle llg lli lll llu lua lub lue lug lui lul luu lux lxi lxx ua- uaa uab uae uag uai ual uau uba ubb ube ubg ubi ubl ubu ubx uea ueb uee ueg uei uel uga ugb uge ugg ugi ugl ugu ugx uia uib uie uig uii uil uiu ula ulb ule ulg uli ull ulu uua uue uug uuu uxb uxu xaa xag xal xau xbe xbl xbx xee xeg xel xeu xex xge xgi xgl xia xie xii xiu xix xla xlb xlg xli xue xui xul xxi xxl xxx