-ic a-a a-b a-c a-i aaa aab aac aad aag aai aao aas ab- aba abb abc abd abg abi abo abs ac- aca acb acc acd acg aci aco acs ad- ada adb adc add adg adi ado ads ag- aga agb agc agd agg agi ago ags ai- aia aib aic aid aig aii aio ais aoa aob aoc aod aog aoi aoo aos as- asa asb asc asd asg asi aso ass baa bab bac bad bag bai bao bas bba bbb bbc bbd bbg bbi bbo bbs bca bcb bcc bcd bcg bci bco bcs bda bdb bdc bdd bdg bdi bdo bds bga bgb bgc bgd bgg bgi bgo bgs bi- bia bib bic bid big bii bio bis boa bob boc bod bog boi boo bos bsa bsb bsc bsd bsg bsi bso bss c-- caa cab cac cad cag cai cao cas cba cbb cbc cbd cbg cbi cbo cbs cca ccb ccc ccd ccg cci cco ccs cda cdb cdc cdd cdg cdi cdo cds cga cgb cgc cgd cgg cgi cgo cgs ci- cia cib cic cid cig cii cio cis co- coa cob coc cod cog coi coo cos csa csb csc csd csg csi cso css daa dab dac dad dag dai dao das dba dbb dbc dbd dbg dbi dbo dbs dca dcb dcc dcd dcg dci dco dcs dda ddb ddc ddd ddg ddi ddo dds dga dgc dgd dgg dgi dgs di- dia dib dic did dig dii dio dis doa dob doc dod dog doi doo dos dsa dsb dsc dsd dsg dsi dso dss g-d gaa gab gac gad gag gai gao gas gba gbc gbd gbg gbi gbo gbs gca gcb gcc gcd gcg gci gco gcs gda gdb gdc gdd gdi gdo gds gga ggb ggc ggd ggg ggi ggo ggs gia gib gic gid gig gii gio gis goa gob goc god gog goi goo gos gsa gsb gsc gsd gsg gsi gso gss i-d ia- iaa iab iac iad iag iai iao ias iba ibb ibc ibd ibg ibi ibo ibs ica icb icc icd icg ici ico ics ida idb idc idd idg idi ido ids iga igb igc igd igg igi igo igs iia iib iic iid iii iio iis io- ioa iob ioc iod iog ioi ioo ios is- isa isb isc isd isg isi iso iss o-i oaa oab oac oad oag oai oao oas ob- oba obb obc obd obg obi obo obs oc- oca ocb occ ocd ocg oci oco ocs oda odb odc odd odg odi odo ods oga ogc ogd ogg ogi ogo ogs oia oib oic oid oii oio ois oo- ooa oob ooc ood oog ooi ooo oos os- osa osb osc osd osg osi oso oss saa sab sac sad sag sai sao sas sba sbb sbc sbd sbg sbi sbo sbs sca scb scc scd scg sci sco scs sda sdb sdc sdd sdg sdi sdo sds sga sgb sgc sgd sgg sgi sgo sgs sia sib sic sid sig sii sio sis soa sob soc sod sog soi soo sos ss- ssa ssb ssc ssd ssg ssi sso sss