a-a a-i aaa aad aai aan aap aas ad- ada add adi adn adp ads ai- aia aid aii ain aip ais an- ana and ani ann anp ans ap- apa apd api apn app aps as- asa asd asi asn asp ass daa dad dai dan dap das dda ddd ddi ddn ddp dds di- dia did dii din dip dis dna dnd dni dnn dnp dns dpa dpd dpi dpn dpp dps dsa dsd dsi dsn dsp dss i-d ia- iaa iad iai ian iap ias ida idd idi idn idp ids iia iid iii iin iip iis in- ina ind ini inn inp ins ipa ipd ipi ipn ipp ips is- isa isd isi isn isp iss n-i naa nad nai nan nap nas nda ndd ndi ndn ndp nds nia nid nii nin nip nis nna nni nnn nnp nns npa npd npi npn npp nps nsa nsd nsi nsn nsp nss p-p paa pad pai pan pap pas pda pdd pdi pdn pdp pds pia pid pii pin pip pis pn- pna pnd pni pnn pnp pns ppa ppd ppi ppn ppp pps ps- psa psd psi psn psp pss saa sad sai san sap sas sda sdd sdi sdn sdp sds sia sid sii sin sip sis sna snd sni snn snp sns spa spd spi spn spp sps ss- ssa ssd ssi ssn ssp sss