-ic a-a a-b a-c a-i a-t aaa aab aac aae aag aai aan aao aat aau ab- aba abb abc abe abg abi abn abo abt abu ac- aca acb acc ace acg aci acn aco act acu aea aeb aec aee aeg aei aen aeo aet aeu ag- aga agb agc age agg agi agn ago agt agu ai- aia aib aic aie aig aii ain aio ait aiu an- ana anb anc ane ang ani ann ano ant anu aoa aob aoc aoe aog aoi aon aoo aot aou at- ata atb atc ate atg ati atn ato att atu au- aua aub auc aue aug aui aun auo aut b-u baa bab bac bae bag bai ban bao bat bau bba bbb bbc bbe bbg bbi bbn bbo bbt bbu bca bcb bcc bce bcg bci bcn bco bct bcu be- bea beb bec bee beg bei ben beo bet beu bga bgb bgc bge bgg bgi bgn bgo bgt bgu bi- bia bib bic bie big bii bin bio bit biu bna bnb bnc bne bng bni bnn bno bnt bnu boa bob boc boe bog boi bon boo bot bou bta btb btc bte btg bti btn bto btt btu bua bub buc bue bug bui bun buo but buu c-- caa cab cac cae cag cai can cao cat cau cba cbb cbc cbe cbg cbi cbn cbo cbt cbu cca ccb ccc cce ccg cci ccn cco cct ccu ce- cea ceb cec cee ceg cei cen ceo cet ceu cga cgb cgc cge cgg cgi cgn cgo cgt cgu ci- cia cib cic cie cig cii cin cio cit ciu cn- cna cnb cnc cne cng cni cnn cno cnt cnu co- coa cob coc coe cog coi con coo cot cou cta ctb ctc cte ctg cti ctn cto ctt ctu cua cub cuc cue cug cui cun cuo cut cuu eaa eab eac eae eag eai ean eao eat eau eba ebb ebc ebe ebg ebi ebn ebo ebt ebu ec- eca ecb ecc ece ecg eci ecn eco ect ecu eea eeb eec eee eeg een eeo eet ega egb egc ege egg egi egn ego egt egu eia eib eic eie eig eii ein eio eit eiu en- ena enb enc ene eng eni enn eno ent enu eo- eoa eob eoc eoe eog eoi eon eoo eot eou eta etb etc ete etg eti etn eto ett etu eu- eua eub euc eue eug eui eun eut gaa gab gac gae gag gai gan gao gat gau gba gbc gbe gbg gbi gbn gbo gbt gbu gca gcb gcc gce gcg gci gcn gco gct gcu ge- gea geb gec gee geg gei gen geo get geu gga ggb ggc ggg ggi ggn ggo ggt ggu gia gib gic gie gig gii gin gio git giu gna gnb gnc gne gni gnn gno gnt gnu goa gob goc goe gog goi gon goo got gou gta gtb gtc gte gtg gti gtn gto gtt gtu gu- gua gub guc gue gug gui gun guo gut guu ia- iaa iab iac iae iag iai ian iao iat iau iba ibb ibc ibe ibg ibi ibn ibo ibt ibu ica icb icc ice icg ici icn ico ict icu ie- iea iec iee ieg iei ien iet iga igb igc ige igg igi ign igo igt igu iia iib iic iie iii iin iio iit iiu in- ina inb inc ine ing ini inn ino int inu io- ioa iob ioc ioe iog ioi ion ioo iot iou ita itb itc ite itg iti itn ito itt itu iu- iua iub iuc iue iug iui iut n-i naa nab nac nae nag nai nan nao nat nau nba nbb nbc nbe nbg nbi nbn nbo nbt nbu nca ncb ncc nce ncg nci ncn nco nct ncu ne- nea neb nec nee neg nei nen neo net neu nga ngb ngc nge ngg ngi ngn ngo ngt ngu nia nib nic nie nig nii nin nio nit niu nna nnb nnc nne nng nni nnn nno nnt nnu no- noa nob noc noe nog noi non noo not nou nta ntb ntc nte ntg nti ntn nto ntt ntu nua nub nuc nue nug nui nun nuo nut nuu o-i oaa oab oac oae oag oai oan oao oat oau ob- oba obb obc obe obg obi obn obo obt obu oc- oca ocb occ ocg oci ocn oco oct ocu oea oeb oec oee oeg oei oen oeo oet oga ogc oge ogg ogi ogn ogo ogt oia oib oic oie oii oin oio oit oiu on- ona onb onc one ong oni onn ono ont onu oo- ooa oob ooc oog ooi oon ooo oot ot- ota otb otc ote otg oti otn oto ott otu ou- oua ouc oue oui oun ouo out taa tab tac tae tag tai tan tao tat tau tba tbb tbc tbe tbg tbi tbn tbo tbt tbu tca tcb tcc tce tcg tci tcn tco tct tcu te- tea teb tec tee teg tei ten teo tet teu tga tgb tgc tge tgg tgi tgn tgo tgt tgu tia tib tic tie tig tii tin tio tit tiu tna tnb tnc tne tng tni tnn tno tnt to- toa tob toc toe tog toi ton too tot tou tta ttb ttc tte ttg tti ttn tto ttt ttu tua tub tuc tue tug tui tun tuo tut tuu ua- uaa uab uac uae uag uai uan uao uat uau uba ubb ubc ube ubg ubi ubn ubo ubt ubu uca ucb ucc uce ucg uci ucn uco uct ucu uea ueb uec uee ueg uei uen uet uga ugb ugc uge ugg ugi ugn ugo ugt ugu uia uib uic uie uig uii uin uio uit uiu un- una unb unc une ung uni unn uno unt unu uoa uob uoc uoe uog uon uoo uot uta utb utc ute