-ic a-a a-b a-c a-i a-z aaa aab aac aag aai aao aaz ab- aba abb abc abg abi abo abz ac- aca acb acc acg aci aco acz ag- aga agb agc agg agi ago agz ai- aia aib aic aig aii aio aiz aoa aob aoc aog aoi aoo az- aza azb azg azi azo azz baa bab bac bag bai bao baz bba bbb bbc bbg bbi bbo bca bcb bcc bcg bci bco bcz bga bgb bgc bgg bgi bgo bgz bi- bia bib bic big bii bio biz boa bob boc bog boi boo boz bza bzo bzz c-- caa cab cac cag cai cao caz cba cbb cbc cbg cbi cbo cbz cca ccb ccc ccg cci cco ccz cga cgb cgc cgg cgi cgo ci- cia cib cic cig cii cio co- coa cob coc cog coi coo coz cz- czc czo gaa gab gac gag gai gao gaz gba gbc gbg gbi gbo gbz gca gcb gcc gcg gci gco gga ggb ggc ggg ggi ggo ggz gia gib gic gig gii gio giz goa gob goc gog goi goo goz gza gzo ia- iaa iab iac iag iai iao iaz iba ibb ibc ibg ibi ibo ibz ica icb icc icg ici ico icz iga igb igc igg igi igo iia iib iic iii iio io- ioa iob ioc iog ioi ioo iza izi izo izz o-i oaa oab oac oag oai oao ob- oba obb obc obg obi obo oc- oca ocb occ ocg oci oco ocz oga ogc ogg ogi ogo oia oib oic oii oio oiz oo- ooa oob ooc oog ooi ooo oza ozo ozz z-g zaa zab zac zag zai zao zaz zbb zbc zco zgb zgg zgi zia zib zig zio ziz zo- zoa zob zoc zog zoi zoo zzz