-ey -ic a-a a-b a-c a-i aaa aab aac aae aag aai aay ab- aba abb abc abe abg abi aby ac- aca acb acc ace acg aci acy aea aeb aec aee aeg aei aey ag- aga agb agc age agg agi agy ai- aia aib aic aie aig aii aiy ay- aya ayc aye ayi baa bab bac bae bag bai bay bba bbb bbc bbe bbg bbi bby bca bcb bcc bce bcg bci bcy be- bea beb bec bee beg bei bey bga bgb bgc bge bgg bgi bi- bia bib bic bie big bii biy by- bya byc bye byg byi c-- caa cab cac cae cag cai cay cba cbb cbc cbe cbg cbi cby cca ccb ccc cce ccg cci ce- cea ceb cec cee ceg cei cey cga cgb cgc cge cgg cgi cgy ci- cia cib cic cie cig cii cya cyb cyc cye cyg eaa eab eac eae eag eai eba ebb ebc ebe ebg ebi eby ec- eca ecb ecc ece ecg eci eea eeb eec eee eeg eey ega egb egc ege egg egi egy eia eib eic eie eig eii eya eyc eye gaa gab gac gae gag gai gay gba gbc gbe gbg gbi gby gca gcb gcc gce gcg gci ge- gea geb gec gee geg gei gey gga ggb ggc ggg ggi gia gib gic gie gig gii giy gy- gya gyb gye ia- iaa iab iac iae iag iai iba ibb ibc ibe ibg ibi iby ica icb icc ice icg ici icy ie- iea iec iee ieg iei iey iga igb igc ige igg igi igy iia iib iic iie iii iya iyc iye iyy yaa yab yac yae yag yai yay ybc ybe ybg ybi yby yca ycc yce yci ycy yea yeb yec yee yeg yei yey yga ygc yie yig yii yyb yyc yye yyg yyy