a-a aaa aad aaf aah aao aas ad- ada add adf adh ado ads af- afa afd aff afh afo afs aha ahd ahf ahh aho ahs aoa aod aof aoh aoo aos as- asa asd asf ash aso ass daa dad daf dah dao das dda ddd ddf ddh ddo dds dfa dfd dff dfh dfo dfs dh- dha dhd dhf dhh dho dhs doa dod dof doh doo dos dsa dsd dsf dsh dso dss faa fad faf fah fao fas fda fdd fdf fdh fdo fds ffa ffd fff ffh ffo ffs fha fhf fhh fho fhs foa fof foh foo fos fsa fsd fsf fsh fso fss haa had haf hah hao has hda hdd hdf hdh hdo hds hfa hfd hff hfh hfo hfs hha hhd hhf hhh hho hhs hoa hod hof hoh hoo hos hsa hsd hsf hsh hss oaa oad oaf oah oao oas oda odd odf odh odo ods of- ofa ofd off ofo ofs oha ohd ohf ohh oho ohs oo- ooa ood oof ooh ooo oos os- osa osd osf osh oso oss saa sad saf sah sao sas sda sdd sdf sdh sdo sds sfa sfd sff sfh sfo sfs sh- sha shd shf shh sho shs soa sod sof soh soo sos ss- ssa ssd ssf ssh sso sss