a-a a-b a-i aaa aab aad aae aag aah aai aao ab- aba abb abd abe abg abh abi abo ad- ada adb add ade adg adh adi ado aea aeb aed aee aeg aeh aei aeo ag- aga agb agd age agg agh agi ago aha ahb ahd ahe ahg ahh ahi aho ai- aia aib aid aie aig aih aii aio aoa aob aod aoe aog aoh aoi aoo baa bab bad bae bag bah bai bao bba bbb bbd bbe bbg bbh bbi bbo bda bdb bdd bde bdg bdh bdi bdo be- bea beb bed bee beg beh bei beo bga bgb bgd bge bgg bgh bgi bgo bha bhb bhd bhe bhg bhh bhi bho bi- bia bib bid bie big bih bii bio boa bob bod boe bog boh boi boo daa dab dad dae dag dah dai dao dba dbb dbd dbe dbg dbh dbi dbo dda ddb ddd dde ddg ddh ddi ddo de- dea deb ded dee deg deh dei deo dga dgd dge dgg dgh dgi dh- dha dhb dhd dhe dhh dhi dho di- dia dib did die dig dih dii dio doa dob dod doe dog doh doi doo eaa eab ead eae eag eah eai eao eba ebb ebd ebe ebg ebh ebi ebo ed- eda edb edd ede edg edh edi edo eea eeb eed eee eeg eeo ega egb egd ege egg egh egi ego eha ehb ehd ehe ehg ehh ehi eho eia eib eid eie eig eii eio eo- eoa eob eod eoe eog eoh eoi eoo g-d gaa gab gad gae gag gah gai gao gba gbd gbe gbg gbh gbi gbo gda gdb gdd gde gdh gdi gdo ge- gea geb ged gee geg geh gei geo gga ggb ggd ggg ggh ggi ggo gha ghb ghd ghe ghg ghh ghi gho gia gib gid gie gig gih gii gio goa gob god goe gog goh goi goo h-i haa hab had hae hag hah hai hao hba hbb hbd hbe hbg hbh hbi hbo hda hdb hdd hde hdg hdh hdi hdo he- hea heb hed hee heg heh hei heo hga hgb hge hgg hgh hgi hgo hha hhb hhd hhe hhg hhh hhi hho hia hib hid hie hig hih hii hio hoa hob hod hoe hog hoh hoi hoo i-d ia- iaa iab iad iae iag iah iai iao iba ibb ibd ibe ibg ibh ibi ibo ida idb idd ide idg idh idi ido ie- iea ied iee ieg iei iga igb igd ige igg igh igi igo iha ihb ihd ihe ihg ihh ihi iho iia iib iid iie iih iii iio io- ioa iob iod ioe iog ioh ioi ioo o-i oaa oab oad oae oag oah oai oao ob- oba obb obd obe obg obh obi obo oda odb odd ode odg odh odi odo oea oeb oed oee oeg oeh oei oeo oga ogd oge ogg ogh ogi ogo oha ohd ohe ohg ohh ohi oho oia oib oid oie oii oio oo- ooa oob ood oog ooh ooi ooo