a-a a-b a-i a-t aaa aab aai aan aao aas aat aau ab- aba abb abi abn abo abs abt abu ai- aia aib aii ain aio ais ait aiu an- ana anb ani ann ano ans ant anu aoa aob aoi aon aoo aos aot aou as- asa asb asi asn aso ass ast asu at- ata atb ati atn ato ats att atu au- aua aub aui aun auo aus aut b-u baa bab bai ban bao bas bat bau bba bbb bbi bbn bbo bbs bbt bbu bi- bia bib bii bin bio bis bit biu bna bnb bni bnn bno bns bnt bnu boa bob boi bon boo bos bot bou bsa bsb bsi bsn bso bss bst bsu bta btb bti btn bto bts btt btu bua bub bui bun buo bus but buu ia- iaa iab iai ian iao ias iat iau iba ibb ibi ibn ibo ibs ibt ibu iia iib iii iin iio iis iit iiu in- ina inb ini inn ino ins int inu io- ioa iob ioi ion ioo ios iot iou is- isa isb isi isn iso iss ist isu ita itb iti itn ito its itt itu iu- iua iub iui ius iut n-i naa nab nai nan nao nas nat nau nba nbb nbi nbn nbo nbs nbt nbu nia nib nii nin nio nis nit niu nna nnb nni nnn nno nns nnt nnu no- noa nob noi non noo nos not nou nsa nsb nsi nsn nso nss nst nsu nta ntb nti ntn nto nts ntt ntu nua nub nui nun nuo nus nut nuu o-i oaa oab oai oan oao oas oat oau ob- oba obb obi obn obo obs obt obu oia oib oii oin oio ois oit oiu on- ona onb oni onn ono ons ont onu oo- ooa oob ooi oon ooo oos oot os- osa osb osi osn oso oss ost osu ot- ota otb oti otn oto ots ott otu ou- oua oui oun ouo ous out saa sab sai san sao sas sat sau sba sbb sbi sbn sbo sbs sbt sbu sia sib sii sin sio sis sit siu sna snb sni snn sno sns snt snu soa sob soi son soo sos sot sou ss- ssa ssb ssi ssn sso sss sst ssu sta stb sti stn sto sts stt stu sua sub sui sun suo sus sut suu taa tab tai tan tao tas tat tau tba tbb tbi tbn tbo tbs tbt tbu tia tib tii tin tio tis tit tiu tna tnb tni tnn tno tns tnt to- toa tob toi ton too tos tot tou tsa tsb tsi tsn tso tss tst tsu tta ttb tti ttn tto tts ttt ttu tua tub tui tun tuo tus tut tuu ua- uaa uab uai uan uao uas uat uau uba ubb ubi ubn ubo ubs ubt ubu uia uib uii uin uio uis uit uiu un- una unb uni unn uno uns unt unu uoa uob uon uoo uos uot usa usb usi usn uso uss ust usu uta utb uti utn uto uts utt utu uua uun uus uut uuu