-ic a-a a-b a-c a-i a-t aaa aab aac aaf aai aao aas aat aau ab- aba abb abc abf abi abo abs abt abu ac- aca acb acc acf aci aco acs act acu af- afa afb afc aff afi afo afs aft afu ai- aia aib aic aif aii aio ais ait aiu aoa aob aoc aof aoi aoo aos aot aou as- asa asb asc asf asi aso ass ast asu at- ata atb atc atf ati ato ats att atu au- aua aub auc auf aui auo aus aut b-u baa bab bac baf bai bao bas bat bau bba bbb bbc bbf bbi bbo bbs bbt bbu bca bcb bcc bcf bci bco bcs bct bcu bfa bfb bfc bff bfi bfo bfs bft bfu bi- bia bib bic bif bii bio bis bit biu boa bob boc bof boi boo bos bot bou bsa bsb bsc bsf bsi bso bss bst bsu bta btb btc btf bti bto bts btt btu bua bub buc buf bui buo bus but buu c-- caa cab cac caf cai cao cas cat cau cba cbb cbc cbf cbi cbo cbs cbt cbu cca ccb ccc ccf cci cco ccs cct ccu cfa cfb cfc cff cfi cfo cfs cft cfu ci- cia cib cic cif cii cio cis cit ciu co- coa cob coc cof coi coo cos cot cou csa csb csc csf csi cso css cst csu cta ctb ctc ctf cti cto cts ctt ctu cua cub cuc cuf cui cuo cus cut cuu faa fab fac faf fai fao fas fat fau fba fbb fbc fbf fbi fbo fbs fbt fbu fca fcb fcc fcf fci fco fcs fct fcu ffa ffc fff ffi ffo ffs fft ffu fia fib fic fif fii fis fit fiu foa fob foc fof foi foo fos fot fou fsa fsb fsc fsf fsi fso fss fst fsu fta ftb ftc ftf fti fto fts ftt ftu fua fub fuf fui fuo fus fut fuu i-f ia- iaa iab iac iaf iai iao ias iat iau iba ibb ibc ibf ibi ibo ibs ibt ibu ica icb icc icf ici ico ics ict icu ifa ifb ifc iff ifi ifo ifs ift ifu iia iib iic iif iii iio iis iit iiu io- ioa iob ioc iof ioi ioo ios iot iou is- isa isb isc isf isi iso iss ist isu ita itb itc itf iti ito its itt itu iu- iua iub iuc iui ius iut o-i oaa oab oac oaf oai oao oas oat oau ob- oba obb obc obf obi obo obs obt obu oc- oca ocb occ ocf oci oco ocs oct ocu of- ofa ofb ofc off ofi ofo ofs oft ofu oia oib oic oif oii oio ois oit oiu oo- ooa oob ooc oof ooi ooo oos oot os- osa osb osc osf osi oso oss ost osu ot- ota otb otc otf oti oto ots ott otu ou- oua ouc ouf oui ouo ous out saa sab sac saf sai sao sas sat sau sba sbb sbc sbf sbi sbo sbs sbt sbu sca scb scc scf sci sco scs sct scu sfa sfb sfc sff sfi sfo sfs sft sfu sia sib sic sif sii sio sis sit siu soa sob soc sof soi soo sos sot sou ss- ssa ssb ssc ssf ssi sso sss sst ssu sta stb stc stf sti sto sts stt stu sua sub suc suf sui suo sus sut suu taa tab tac taf tai tao tas tat tau tba tbb tbc tbf tbi tbo tbs tbt tbu tca tcb tcc tcf tci tco tcs tct tcu tfa tfb tfc tff tfi tfo tfs tft tfu tia tib tic tif tii tio tis tit tiu to- toa tob toc tof toi too tos tot tou tsa tsb tsc tsf tsi tso tss tst tsu tta ttb ttc ttf tti tto tts ttt ttu tua tub tuc tuf tui tuo tus tut tuu ua- uaa uab uac uaf uai uao uas uat uau uba ubb ubc ubf ubi ubo ubs ubt ubu uca ucb ucc ucf uci uco ucs uct ucu ufa ufc uff ufi ufo ufs uft ufu uia uib uic uif uii uio uis uit uiu uoa uob uoc uoo uos uot usa usb usc usf usi uso uss ust usu uta utb utc utf uti uto uts utt utu uua uuc uus uut uuu

-ous a-fu a-ii aaaa aaab aaac aaaf aaai aaas aaba aabb aabc aabi aabt aaca aacb aacc aacf aaci aaco aacs aact aacu aafa aafb aafc aaff aafi aaib aaic aaii aais aaoo aasa aasc aasf aasi aass aast aasu aata aatc aatf aatt aaus abaa abab abac abaf abai abas abat abau abb- abba abbb abbi abbo abbs abbt abca abcb abcc abcf abci abcs abct abff abia abib abic abis abit abiu aboa abob abof aboo abos abot abou abs- absa absf absi abss absu abta abts abtu abua abuf abus abut ac-t acaa acab acac acai acas acat acba acca accc accf acci acco accs acct accu acfc acfi acfs acft aci- acia acic acif acis acoa acos acot acou acsa acsc acsi acss acst acta actc actf acti acto acts actt actu acu- acuf acuo acus acut afaa afao afat afbs afca afcb afcc afci afcs afcu affa affc affi affo affs afft afia afib afif afis afit afoa afoo afsa afsb afsc afst afta aftc afts afua afus aiai aias aiba aibo aica aicc aicf aics aiff aifs aiia aiib aiic aioc aioi aisa aisb aisi aiso aist aita aitf aiti aits aitt aitu aiui aoba aoca aocs aoss aotc aotf aouf aous aout asaa asab asac asaf asai asao asas asat asau asba asbo asbu asc- asca ascb ascc asci asco asct asfa asfi asia asic asif asii asio asis asit asob asoc asof asoi asos asot asou assa assc assi asso asss asst assu asta astb astc asti