-ic a-a a-b a-c a-i aaa aab aac aae aag aah aai aao ab- aba abb abc abe abg abh abi abo ac- aca acb acc ace acg ach aci aco aea aeb aec aee aeg aeh aei aeo ag- aga agb agc age agg agh agi ago aha ahb ahc ahe ahg ahh ahi aho ai- aia aib aic aie aig aih aii aio aoa aob aoc aoe aog aoh aoi aoo baa bab bac bae bag bah bai bao bba bbb bbc bbe bbg bbh bbi bbo bca bcb bcc bce bcg bch bci bco be- bea beb bec bee beg beh bei beo bga bgb bgc bge bgg bgh bgi bgo bha bhb bhc bhe bhg bhh bhi bho bi- bia bib bic bie big bih bii bio boa bob boc boe bog boh boi boo c-- caa cab cac cae cag cah cai cao cba cbb cbc cbe cbg cbh cbi cbo cca ccb ccc cce ccg cch cci cco ce- cea ceb cec cee ceg ceh cei ceo cga cgb cgc cge cgg cgh cgi cgo ch- cha chb chc che chg chh chi cho ci- cia cib cic cie cig cih cii cio co- coa cob coc coe cog coh coi coo eaa eab eac eae eag eah eai eao eba ebb ebc ebe ebg ebh ebi ebo ec- eca ecb ecc ece ecg ech eci eco eea eeb eec eee eeg eeo ega egb egc ege egg egh egi ego eha ehb ehc ehe ehg ehh ehi eho eia eib eic eie eig eii eio eo- eoa eob eoc eoe eog eoh eoi eoo gaa gab gac gae gag gah gai gao gba gbc gbe gbg gbh gbi gbo gca gcb gcc gce gcg gch gci gco ge- gea geb gec gee geg geh gei geo gga ggb ggc ggg ggh ggi ggo gha ghb ghc ghe ghg ghh ghi gho gia gib gic gie gig gih gii gio goa gob goc goe gog goh goi goo h-i haa hab hac hae hag hah hai hao hba hbb hbc hbe hbg hbh hbi hbo hca hcb hcc hce hcg hch hci hco he- hea heb hec hee heg heh hei heo hga hgb hgc hge hgg hgh hgi hgo hha hhb hhc hhe hhg hhh hhi hho hia hib hic hie hig hih hii hio hoa hob hoc hoe hog hoh hoi hoo ia- iaa iab iac iae iag iah iai iao iba ibb ibc ibe ibg ibh ibi ibo ica icb icc ice icg ich ici ico ie- iea iec iee ieg iei iga igb igc ige igg igh igi igo iha ihb ihc ihe ihg ihh ihi iho iia iib iic iie iih iii iio io- ioa iob ioc ioe iog ioh ioi ioo o-i oaa oab oac oae oag oah oai oao ob- oba obb obc obe obg obh obi obo oc- oca ocb occ ocg och oci oco oea oeb oec oee oeg oeh oei oeo oga ogc oge ogg ogh ogi ogo oha ohc ohe ohg ohh ohi oho oia oib oic oie oii oio oo- ooa oob ooc oog ooh ooi ooo