a-a a-i a-z aaa aad aai aao aap aas aaz ad- ada add adi ado adp ads adz ai- aia aid aii aio aip ais aiz aoa aod aoi aoo aop aos ap- apa apd api apo app aps as- asa asd asi aso asp ass asz az- aza azd azi azo azp azs azz daa dad dai dao dap das daz dda ddd ddi ddo ddp dds ddz di- dia did dii dio dip dis diz doa dod doi doo dop dos doz dpa dpd dpi dpo dpp dps dpz dsa dsd dsi dso dsp dss dsz dza dzd dzi dzo dzp dzs i-d ia- iaa iad iai iao iap ias iaz 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 iza izi izo izz o-i oaa oad oai oao oap oas oda odd odi odo odp ods oia oid oii oio oip ois oiz oo- ooa ood ooi ooo oop oos op- opa opd opi opo opp ops os- osa osd osi oso osp oss oza ozo ozs ozz p-p paa pad pai pao pap pas paz pda pdd pdi pdo pdp pds pdz pia pid pii pio pip pis piz poa pod poi poo pop pos poz ppa ppd ppi ppo ppp pps ppz ps- psa psd psi pso psp pss pzp saa sad sai sao sap sas saz sda sdd sdi sdo sdp sds sdz sia sid sii sio sip sis soa sod soi soo sop sos soz spa spd spi spo spp sps spz ss- ssa ssd ssi sso ssp sss ssz sza szd szi szp zaa zad zai zao zap zas zaz zds zia zid zio zip zis ziz zo- zoa zod zoi zoo zos zpi zpo zpp zsa zsi zsz zzs zzz