-er -ic a-a a-b a-c a-i aaa aab aac aae aag aai aan aar aau ab- aba abb abc abe abg abi abn abr abu ac- aca acb acc ace acg aci acn acr acu aea aeb aec aee aeg aei aen aer aeu ag- aga agb agc age agg agi agn agr agu ai- aia aib aic aie aig aii ain air aiu an- ana anb anc ane ang ani ann anr anu ar- ara arb arc are arg ari arn arr aru au- aua aub auc aue aug aui aun aur b-u baa bab bac bae bag bai ban bar bau bba bbb bbc bbe bbg bbi bbn bbr bbu bca bcb bcc bce bcg bci bcn bcr bcu be- bea beb bec bee beg bei ben ber beu bga bgb bgc bge bgg bgi bgn bgr bgu bi- bia bib bic bie big bii bin bir biu bna bnb bnc bne bng bni bnn bnr bnu bra brb bre brg bri brn brr bru bua bub buc bue bug bui bun bur buu c-- caa cab cac cae cag cai can car cau cba cbb cbc cbe cbg cbi cbn cbr cbu cca ccb ccc cce ccg cci ccn ccr ccu ce- cea ceb cec cee ceg cei cen cer ceu cga cgb cgc cge cgg cgi cgn cgr cgu ci- cia cib cic cie cig cii cin cir ciu cn- cna cnb cnc cne cng cni cnn cnr cnu cra crb crc cre crg cri crn crr cru cua cub cuc cue cug cui cun cur cuu eaa eab eac eae eag eai ean ear eau eba ebb ebc ebe ebg ebi ebn ebr ebu ec- eca ecb ecc ece ecg eci ecn ecr ecu eea eeb eec eee eeg een eer ega egb egc ege egg egi egn egr egu eia eib eic eie eig eii ein eir eiu en- ena enb enc ene eng eni enn enr enu era erb erc ere erg eri ern err eru eu- eua eub euc eue eug eui eun eur gaa gab gac gae gag gai gan gar gau gba gbc gbe gbg gbi gbn gbr gbu gca gcb gcc gce gcg gci gcn gcr gcu ge- gea geb gec gee geg gei gen ger geu gga ggb ggc ggg ggi ggn ggr ggu gia gib gic gie gig gii gin gir giu gna gnb gnc gne gni gnn gnr gnu gra grb grc gre grg gri grn grr gru gu- gua gub guc gue gug gui gun gur guu ia- iaa iab iac iae iag iai ian iar iau iba ibb ibc ibe ibg ibi ibn ibr ibu ica icb icc ice icg ici icn icr icu ie- iea iec iee ieg iei ien ier iga igb igc ige igg igi ign igr igu iia iib iic iie iii iin iir iiu in- ina inb inc ine ing ini inn inr inu ir- ira irb irc ire irg iri irn irr iru iu- iua iub iuc iue iug iui iur n-i naa nab nac nae nag nai nan nar nau nba nbb nbc nbe nbg nbi nbn nbr nbu nca ncb ncc nce ncg nci ncn ncr ncu ne- nea neb nec nee neg nei nen ner neu nga ngb ngc nge ngg ngi ngn ngu nia nib nic nie nig nii nin nir niu nna nnb nnc nne nng nni nnn nnu nra nrb nrc nre nrg nri nrn nrr nru nua nub nuc nue nug nui nun nur nuu ra- raa rab rac rae rag rai ran rar rau rba rbb rbc rbe rbg rbi rbn rbr rbu rca rcb rcc rce rcg rci rcn rcr rcu re- rea reb rec ree reg rei ren rer reu rga rgb rgc rge rgg rgi rgn rgr ria rib ric rie rig rii rin rir rna rnb rnc rng rni rnn rnr rnu rra rrb rrc rrg rri rrn rrr rru rua rub ruc rue rug rui run rur ruu ua- uaa uab uac uae uag uai uan uar uau uba ubb ubc ube ubg ubi ubn ubr ubu uca ucb ucc uce ucg uci ucn ucr ucu uea ueb uec uee ueg uei uen uer uga ugb ugc uge ugg ugi ugn ugr ugu uia uib uic uie uig uii uin uir uiu un- una unb unc une ung uni unn unr unu ur- ura urb urc ure urg uri urn urr uru uua uuc uue uug uun uur uuu