-ic a-a a-c a-i aaa aac aad aai aao aap aas ac- aca acc acd aci aco acp acs ad- ada adc add adi ado adp ads ai- aia aic aid aii aio aip ais aoa aoc aod aoi aoo aop aos ap- apa apc apd api apo app aps as- asa asc asd asi aso asp ass c-- caa cac cad cai cao cap cas cca ccc ccd cci cco ccp ccs cda cdc cdd cdi cdo cdp cds ci- cia cic cid cii cio cip cis co- coa coc cod coi coo cop cos cpa cpc cpd cpi cpo cpp cps csa csc csd csi cso csp css daa dac dad dai dao dap das dca dcc dcd dci dco dcp dcs dda ddc ddd ddi ddo ddp dds di- dia dic did dii dio dip dis doa doc dod doi doo dop dos dpa dpc dpd dpi dpo dpp dps dsa dsc dsd dsi dso dsp dss i-d ia- iaa iac iad iai iao iap ias ica icc icd ici ico icp ics ida idc idd idi ido idp ids iia iic iid iii iio iip iis io- ioa ioc iod ioi ioo iop ios ipa ipc ipd ipi ipo ipp ips is- isa isc isd isi iso isp iss o-i oaa oac oad oai oao oap oas oc- oca occ ocd oci oco ocp ocs oda odc odd odi odo odp ods oia oic oid oii oio oip ois oo- ooa ooc ood ooi ooo oop oos op- opa opc opd opi opo opp ops os- osa osc osd osi oso osp oss p-p paa pac pad pai pao pap pas pca pcc pcd pci pco pcp pcs pda pdc pdd pdi pdo pdp pds pia pic pid pii pio pip pis poa poc pod poi poo pop pos ppa ppc ppd ppi ppo ppp pps ps- psa psc psd psi pso psp pss saa sac sad sai sao sap sas sca scc scd sci sco scp scs sda sdc sdd sdi sdo sdp sds sia sic sid sii sio sip sis soa soc sod soi soo sop sos spa spc spd spi spo spp sps ss- ssa ssc ssd ssi sso ssp sss