a-a a-b aaa aab aad aae aag aah aao ab- aba abb abd abe abg abh abo ad- ada adb add ade adg adh ado aea aeb aed aee aeg aeh aeo ag- aga agb agd age agg agh ago aha ahb ahd ahe ahg ahh aho aoa aob aod aoe aog aoh aoo baa bab bad bae bag bah bao bba bbb bbd bbe bbg bbh bbo bda bdb bdd bde bdg bdh bdo be- bea beb bed bee beg beh beo bga bgb bgd bge bgg bgh bgo bha bhb bhd bhe bhg bhh bho boa bob bod boe bog boh boo daa dab dad dae dag dah dao dba dbb dbd dbe dbg dbh dbo dda ddb ddd dde ddg ddh ddo de- dea deb ded dee deg deh deo dga dgd dge dgg dgh dh- dha dhb dhd dhe dhh dho doa dob dod doe dog doh doo eaa eab ead eae eag eah eao eba ebb ebd ebe ebg ebh ebo ed- eda edb edd ede edg edh edo eea eeb eed eee eeg eeo ega egb egd ege egg egh ego eha ehb ehd ehe ehg ehh eho eo- eoa eob eod eoe eog eoh eoo g-d gaa gab gad gae gag gah gao gba gbd gbe gbg gbh gbo gda gdb gdd gde gdh gdo ge- gea geb ged gee geg geh geo gga ggb ggd ggg ggh ggo gha ghb ghd ghe ghg ghh gho goa gob god goe gog goh goo haa hab had hae hag hah hao hba hbb hbd hbe hbg hbh hbo hda hdb hdd hde hdg hdh hdo he- hea heb hed hee heg heh heo hga hgb hge hgg hgh hgo hha hhb hhd hhe hhg hhh hho hoa hob hod hoe hog hoh hoo oaa oab oad oae oag oah oao ob- oba obb obd obe obg obh obo oda odb odd ode odg odh odo oea oeb oed oee oeg oeh oeo oga ogd oge ogg ogh ogo oha ohd ohe ohg ohh oho oo- ooa oob ood oog ooh ooo