a-a a-b a-i a-t aaa aab aai aan aao aar aat aau aax ab- aba abb abi abn abo abr abt abu abx ai- aia aib aii ain aio air ait aiu aix an- ana anb ani ann ano anr ant anu anx aoa aob aoi aon aoo aor aot aou aox ar- ara arb ari arn aro arr art aru arx at- ata atb ati atn ato atr att atu atx au- aua aub aui aun auo aur aut aux ax- axa axi axn axo axr axt axx b-u baa bab bai ban bao bar bat bau bax bba bbb bbi bbn bbo bbr bbt bbu bbx bi- bia bib bii bin bio bir bit biu bix bna bnb bni bnn bno bnr bnt bnu bnx boa bob boi bon boo bor bot bou box bra brb bri brn bro brr brt bru brx bta btb bti btn bto btr btt btu btx bua bub bui bun buo bur but buu bux bxb bxi bxn bxo bxx ia- iaa iab iai ian iao iar iat iau iba ibb ibi ibn ibo ibr ibt ibu ibx iia iib iii iin iio iir iit iiu iix in- ina inb ini inn ino inr int inu inx io- ioa iob ioi ion ioo ior iot iou ir- ira irb iri irn iro irr irt iru irx ita itb iti itn ito itt itu itx iu- iua iub iui iur iut ixi ixn n-i naa nab nai nan nao nar nat nau nax nba nbb nbi nbn nbo nbr nbt nbu nbx nia nib nii nin nio nir nit niu nix nna nnb nni nnn nno nnt nnu no- noa nob noi non noo nor not nou nox nra nrb nri nrn nro nrr nrt nru nrx nta ntb nti ntn nto ntr ntt ntu ntx nua nub nui nun nuo nur nut nuu nux nxt o-i oaa oab oai oan oao oar oat oau oax ob- oba obb obi obn obo obr obt obu obx oia oib oii oin oio oir oit oiu on- ona onb oni onn ono onr ont onu onx oo- ooa oob ooi oon ooo oor oot oox or- ora orb ori orn oro orr ort oru orx ot- ota otb oti otn oto otr ott otu ou- oua oui oun ouo our out ox- oxa oxb oxi oxn oxo oxt oxx ra- raa rab rai ran rao rar rat rau rax rba rbb rbi rbn rbo rbr rbt rbu rbx ria rib rii rin rio rir rit rix rna rnb rni rnn rno rnr rnt rnu roa rob roi ron roo ror rot rou rox rra rrb rri rrn rrr rrt rru rta rtb rti rtn rto rtr rtt rtu rtx rua rub rui run ruo rur rut ruu rux rxr t-x taa tab tai tan tao tar tat tau tax tba tbb tbi tbn tbo tbr tbt tbu tia tib tii tin tio tir tit tiu tix tna tnb tni tnn tno tnr tnt tnx to- toa tob toi ton too tor tot tou tox tra trb tri trn tro trr trt tru trx tta ttb tti ttn tto ttr ttt ttu ttx tua tub tui tun tuo tur tut tuu tux txi txn txt txu ua- uaa uab uai uan uao uar uat uau uba ubb ubi ubn ubo ubr ubt ubu ubx uia uib uii uin uio uir uit uiu un- una unb uni unn uno unr unt unu unx uoa uob uon uoo uor uot uox ur- ura urb uri urn uro urr urt uru urx uta utb uti utn uto utr utt utu utx uua uun uur uut uuu uxb uxo uxr uxt uxu xaa xan xar xat xau xbr xbx xia xii xin xio xit xiu xix xna xno xnu xoa xoi xon xoo xor xot xox xrt xrx xti xtr xtx xui xun xxi xxo xxx