a-a a-c aaa aac aad aah aao aar ac- aca acc acd ach aco acr ad- ada adc add adh ado adr aha ahc ahd ahh aho ahr aoa aoc aod aoh aoo aor ar- ara arc ard arh aro arr c-- caa cac cad cah cao car cca ccc ccd cch cco ccr cda cdc cdd cdh cdo cdr ch- cha chc chd chh cho chr co- coa coc cod coh coo cor cra crc crd crh cro crr daa dac dad dah dao dar dca dcc dcd dco dcr dda ddc ddd ddh ddo ddr dh- dha dhc dhd dhh dho dhr doa doc dod doh doo dor dra drc drd dro drr haa hac had hah hao har hca hcc hcd hch hco hcr hda hdc hdd hdh hdo hdr hha hhc hhd hhh hho hhr hoa hoc hod hoh hoo hor hr- hra hrc hrd hrh hro hrr oaa oac oad oah oao oar oc- oca occ ocd och oco ocr oda odc odd odh odo odr oha ohc ohd ohh oho ohr oo- ooa ooc ood ooh ooo oor or- ora orc ord orh oro orr ra- raa rac rad rah rao rar rca rcc rcd rch rco rcr rda rdc rdd rdh rdo rdr rh- rha rhc rhd rhh rho rhr roa roc rod roh roo ror rra rrc rrd rrh rrr