a-a aaa aan aao aap aas aav an- ana ann ano anp ans anv aoa aon aoo aop aos aov ap- apa apn apo app aps apv as- asa asn aso asp ass asv av- ava avn avo avp avs naa nan nao nap nas nav nna nnn nno nnp nns nnv no- noa non noo nop nos nov npa npn npo npp nps npv nsa nsn nso nsp nss nsv nva nvn nvp nvv oaa oan oao oap oas oav on- ona onn ono onp ons oo- ooa oon ooo oop oos oov op- opa opn opo opp ops opv os- osa osn oso osp oss osv ov- ova ovo ovp ovs ovv p-p paa pan pao pap pas pav pn- pna pnn pno pnp pns pnv poa pon poo pop pos pov ppa ppn ppo ppp pps ppv ps- psa psn pso psp pss psv pva pvn pvo pvp pvs pvv saa san sao sap sas sav sna snn sno snp sns snv soa son soo sop sos sov spa spn spo spp sps spv ss- ssa ssn sso ssp sss ssv sva svn svo svp svs svv v-a vaa van vao vap vas vav vn- vna vno vnp vns vnv voa von voo vop vos vov vpa vpn vpo vpp vps vsa vsn vso vsp vss vsv vva vvo vvs vvv