a-a a-i aaa aad aaf aai aao aap aas ad- ada add adf adi ado adp ads af- afa afd aff afi afo afp afs ai- aia aid aif aii aio aip ais aoa aod aof aoi aoo aop aos ap- apa apd apf api apo app aps as- asa asd asf asi aso asp ass daa dad daf dai dao dap das dda ddd ddf ddi ddo ddp dds dfa dfd dff dfi dfo dfp dfs di- dia did dif dii dio dip dis doa dod dof doi doo dop dos dpa dpd dpf dpi dpo dpp dps dsa dsd dsf dsi dso dsp dss faa fad faf fai fao fap fas fda fdd fdf fdi fdo fdp fds ffa ffd fff ffi ffo ffp ffs fia fid fif fii fip fis foa fof foi foo fop fos fpa fpd fpi fpo fpp fps fsa fsd fsf fsi fso fsp fss i-d i-f ia- iaa iad iaf iai iao iap ias ida idd idf idi ido idp ids ifa ifd iff ifi ifo ifp ifs iia iid iif iii iio iip iis io- ioa iod iof ioi ioo iop ios ipa ipd ipf ipi ipo ipp ips is- isa isd isf isi iso isp iss o-i oaa oad oaf oai oao oap oas oda odd odf odi odo odp ods of- ofa ofd off ofi ofo ofp ofs oia oid oif oii oio oip ois oo- ooa ood oof ooi ooo oop oos op- opa opd opf opi opo opp ops os- osa osd osf osi oso osp oss p-p paa pad paf pai pao pap pas pda pdd pdf pdi pdo pdp pds pfa pfd pff pfi pfo pfp pfs pia pid pif pii pio pip pis poa pod pof poi poo pop pos ppa ppd ppf ppi ppo ppp pps ps- psa psd psf psi pso psp pss saa sad saf sai sao sap sas sda sdd sdf sdi sdo sdp sds sfa sfd sff sfi sfo sfp sfs sia sid sif sii sio sip sis soa sod sof soi soo sop sos spa spd spf spi spo spp sps ss- ssa ssd ssf ssi sso ssp sss