a-a a-t aaa aad aan aao aap aas aat ad- ada add adn ado adp ads adt an- ana and ann ano anp ans ant aoa aod aon aoo aop aos aot ap- apa apd apn apo app aps apt as- asa asd asn aso asp ass ast at- ata atd atn ato atp ats att daa dad dan dao dap das dat dda ddd ddn ddo ddp dds ddt dna dnd dnn dno dnp dns dnt doa dod don doo dop dos dot dpa dpd dpn dpo dpp dps dpt dsa dsd dsn dso dsp dss dst dta dtd dtn dto dtp dts dtt naa nad nan nao nap nas nat nda ndd ndn ndo ndp nds ndt nna nnn nno nnp nns nnt no- noa nod non noo nop nos not npa npd npn npo npp nps npt nsa nsd nsn nso nsp nss nst nta ntd ntn nto ntp nts ntt oaa oad oan oao oap oas oat oda odd odn odo odp ods odt on- ona ond onn ono onp ons ont oo- ooa ood oon ooo oop oos oot op- opa opd opn opo opp ops opt os- osa osd osn oso osp oss ost ot- ota otd otn oto otp ots ott p-p paa pad pan pao pap pas pat pda pdd pdn pdo pdp pds pdt pn- pna pnd pnn pno pnp pns pnt poa pod pon poo pop pos pot ppa ppd ppn ppo ppp pps ppt ps- psa psd psn pso psp pss pst pt- pta ptd ptn pto ptp pts ptt saa sad san sao sap sas sat sda sdd sdn sdo sdp sds sdt sna snd snn sno snp sns snt soa sod son soo sop sos sot spa spd spn spo spp sps spt ss- ssa ssd ssn sso ssp sss sst sta std stn sto stp sts stt taa tad tan tao tap tas tat tda tdd tdn tdo tdp tds tdt tna tnd tnn tno tnp tns tnt to- toa tod ton too top tos tot tpa tpd tpn tpo tpp tps tpt tsa tsd tsn tso tsp tss tst tta ttd ttn tto ttp tts ttt