-ic a-a a-c a-i a-t aaa aac aai aao aap aas aat ac- aca acc aci aco acp acs act ai- aia aic aii aio aip ais ait aoa aoc aoi aoo aop aos aot ap- apa apc api apo app aps apt as- asa asc asi aso asp ass ast at- ata atc ati ato atp ats att c-- caa cac cai cao cap cas cat cca ccc cci cco ccp ccs cct ci- cia cic cii cio cip cis cit co- coa coc coi coo cop cos cot cpa cpc cpi cpo cpp cps cpt csa csc csi cso csp css cst cta ctc cti cto ctp cts ctt ia- iaa iac iai iao iap ias iat ica icc ici ico icp ics ict iia iic iii iio iip iis iit io- ioa ioc ioi ioo iop ios iot ipa ipc ipi ipo ipp ips ipt is- isa isc isi iso isp iss ist ita itc iti ito itp its itt o-i oaa oac oai oao oap oas oat oc- oca occ oci oco ocp ocs oct oia oic oii oio oip ois oit oo- ooa ooc ooi ooo oop oos oot op- opa opc opi opo opp ops opt os- osa osc osi oso osp oss ost ot- ota otc oti oto otp ots ott p-p paa pac pai pao pap pas pat pca pcc pci pco pcp pcs pct pia pic pii pio pip pis pit poa poc poi poo pop pos pot ppa ppc ppi ppo ppp pps ppt ps- psa psc psi pso psp pss pst pt- pta ptc pti pto ptp pts ptt saa sac sai sao sap sas sat sca scc sci sco scp scs sct sia sic sii sio sip sis sit soa soc soi soo sop sos sot spa spc spi spo spp sps spt ss- ssa ssc ssi sso ssp sss sst sta stc sti sto stp sts stt taa tac tai tao tap tas tat tca tcc tci tco tcp tcs tct tia tic tii tio tip tis tit to- toa toc toi too top tos tot tpa tpc tpi tpo tpp tps tpt tsa tsc tsi tso tsp tss tst tta ttc tti tto ttp tts ttt