a-a a-i aaa aad aai aao aap aas ad- ada add adi ado adp ads ai- aia aid aii aio aip ais aoa aod aoi aoo aop aos ap- apa apd api apo app aps as- asa asd asi aso asp ass daa dad dai dao dap das dda ddd ddi ddo ddp dds di- dia did dii dio dip dis doa dod doi doo dop dos dpa dpd dpi dpo dpp dps dsa dsd dsi dso dsp dss i-d ia- iaa iad iai iao iap ias ida idd idi ido idp ids iia iid iii iio iip iis io- ioa iod ioi ioo iop ios ipa ipd ipi ipo ipp ips is- isa isd isi iso isp iss o-i oaa oad oai oao oap oas oda odd odi odo odp ods oia oid oii oio oip ois oo- ooa ood ooi ooo oop oos op- opa opd opi opo opp ops os- osa osd osi oso osp oss p-p paa pad pai pao pap pas pda pdd pdi pdo pdp pds pia pid pii pio pip pis poa pod poi poo pop pos ppa ppd ppi ppo ppp pps ps- psa psd psi pso psp pss saa sad sai sao sap sas sda sdd sdi sdo sdp sds sia sid sii sio sip sis soa sod soi soo sop sos spa spd spi spo spp sps ss- ssa ssd ssi sso ssp sss