a-a a-b a-i aaa aab aai aan aap aar aas aav ab- aba abb abi abn abp abr abs abv ai- aia aib aii ain aip air ais aiv an- ana anb ani ann anp anr ans anv ap- apa apb api apn app apr aps apv ar- ara arb ari arn arp arr ars arv as- asa asb asi asn asp asr ass asv av- ava avb avi avn avp avr avs b-p baa bab bai ban bap bar bas bav bba bbb bbi bbn bbp bbr bbs bi- bia bib bii bin bip bir bis biv bna bnb bni bnn bnp bnr bns bnv bpa bpb bpi bpn bpp bpr bps bpv bra brb bri brn brp brr brs brv bsa bsb bsi bsn bsp bsr bss bsv bva bvb bvi bvn bvp bvr bvs bvv i-v ia- iaa iab iai ian iap iar ias iav iba ibb ibi ibn ibp ibr ibs ibv iia iib iii iin iip iir iis in- ina inb ini inn inp inr ins inv ipa ipb ipi ipn ipp ipr ips ipv ir- ira irb iri irn irp irr irs irv is- isa isb isi isn isp isr iss isv iva ivb ivi ivp ivr ivs ivv n-i naa nab nai nan nap nar nas nav nba nbb nbi nbn nbp nbr nbs nbv nia nib nii nin nip nir nis niv nna nnb nni nnn nnp nns nnv npa npb npi npn npp npr nps npv nra nrb nri nrn nrp nrr nrs nrv nsa nsb nsi nsn nsp nsr nss nsv nva nvb nvi nvn nvp nvv p-p paa pab pai pan pap par pas pav pba pbb pbi pbn pbp pbr pbs pia pib pii pin pip pir pis piv pn- pna pnb pni pnn pnp pnr pns pnv ppa ppb ppi ppn ppp ppr pps ppv pra prb pri prn prp prr prs prv ps- psa psb psi psn psp psr pss psv pva pvb pvi pvn pvp pvr pvs pvv ra- raa rab rai ran rap rar ras rav rba rbb rbi rbn rbp rbr rbs ria rib rii rin rip rir ris riv rna rnb rni rnn rnp rnr rns rnv rpa rpb rpi rpn rpp rpr rps rpv rra rrb rri rrn rrp rrr rrs rsa rsb rsi rsn rsp rsr rss rsv rva rvb rvi rvn rvp rvr rvs rvv saa sab sai san sap sar sas sav sba sbb sbi sbn sbp sbr sbs sbv sia sib sii sin sip sir sis siv sna snb sni snn snp snr sns snv spa spb spi spn spp spr sps spv sr- sra srb sri srn srp srr srs srv ss- ssa ssb ssi ssn ssp ssr sss ssv sva svb svi svn svp svr svs svv v-a vaa vab vai van vap var vas vav vba vbi vbr vbs vbv vi- via vib vii vin vip vir vis viv vn- vna vni vnp vnr vns vnv vpa vpb vpi vpn vpp vpr vps vra vrb vri vrn vrp vrr vrs vsa vsb vsi vsn vsp vsr vss vsv vva vvb vvi vvr vvs vvv