-al -ol a-a a-b a-i aaa aab aaf aai aal aao aau aax ab- aba abb abf abi abl abo abu abx af- afa afb aff afi afl afo afu afx ai- aia aib aif aii ail aio aiu aix al- ala alb alf ali all alo alu alx aoa aob aof aoi aol aoo aou aox au- aua aub auf aui aul auo aux ax- axa axi axl axo axx b-u baa bab baf bai bal bao bau bax bba bbb bbf bbi bbl bbo bbu bbx bfa bfb bff bfi bfl bfo bfu bfx bi- bia bib bif bii bil bio biu bix bla blb blf bli bll blo blu blx boa bob bof boi bol boo bou box bua bub buf bui bul buo buu bux bxb bxi bxl bxo bxx faa fab faf fai fal fao fau fax fba fbb fbf fbi fbl fbo fbu fbx ffa fff ffi ffl ffo ffu ffx fia fib fif fii fil fiu fix fla flb flf fli fll flo flu flx foa fob fof foi fol foo fou fox fua fub fuf fui ful fuo fuu fux fxi fxu fxx i-f ia- iaa iab iaf iai ial iao iau iba ibb ibf ibi ibl ibo ibu ibx ifa ifb iff ifi ifl ifo ifu ifx iia iib iif iii iil iio iiu iix il- ila ilb ilf ili ill ilo ilu ilx io- ioa iob iof ioi iol ioo iou iu- iua iub iui ixi ixl la- laa lab laf lai lal lao lau lax lba lbb lbf lbi lbl lbo lbu lbx lfa lfb lff lfi lfl lfo lfu lfx lia lib lif lii lil lio liu lix lla llb llf lli lll llo llu loa lob lof loi lol loo lou lox lua lub luf lui lul luo luu lux lxi lxo lxx o-i oaa oab oaf oai oal oao oau oax ob- oba obb obf obi obl obo obu obx of- ofa ofb off ofi ofl ofo ofu ofx oia oib oif oii oil oio oiu ola olb olf oli oll olo olu oo- ooa oob oof ooi ool ooo oox ou- oua ouf oui oul ouo ox- oxa oxb oxf oxi oxo oxx ua- uaa uab uaf uai ual uao uau uba ubb ubf ubi ubl ubo ubu ubx ufa uff ufi ufl ufo ufu ufx uia uib uif uii uil uio uiu ula ulb ulf uli ull ulo ulu uoa uob uol uoo uox uua uuu uxb uxf uxo uxu xaa xaf xal xau xbl xbx xfa xfl xfx xia xii xio xiu xix xla xlb xlf xli xoa xof xoi xoo xox xui xul xxi xxl xxo xxx