a-a a-i aaa aaf aai aan aao aap aar af- afa aff afi afn afo afp afr ai- aia aif aii ain aio aip air an- ana anf ani ann ano anp anr aoa aof aoi aon aoo aop aor ap- apa apf api apn apo app apr ar- ara arf ari arn aro arp arr faa faf fai fan fao fap far ffa fff ffi ffn ffo ffp ffr fia fif fii fin fip fir fna fnf fni fnn fnp fnr foa fof foi fon foo fop for fpa fpi fpn fpo fpp fpr fra frf fri frn fro frp frr i-f ia- iaa iaf iai ian iao iap iar ifa iff ifi ifn ifo ifp ifr iia iif iii iin iio iip iir in- ina inf ini inn ino inp inr io- ioa iof ioi ion ioo iop ior ipa ipf ipi ipn ipo ipp ipr ir- ira irf iri irn iro irp irr n-i naa naf nai nan nao nap nar nfa nff nfi nfn nfo nfp nfr nia nif nii nin nio nip nir nna nnf nni nnn nno nnp no- noa nof noi non noo nop nor npa npf npi npn npo npp npr nra nrf nri nrn nro nrp nrr o-i oaa oaf oai oan oao oap oar of- ofa off ofi ofn ofo ofp ofr oia oif oii oin oio oip oir on- ona onf oni onn ono onp onr oo- ooa oof ooi oon ooo oop oor op- opa opf opi opn opo opp opr or- ora orf ori orn oro orp orr p-p paa paf pai pan pao pap par pfa pff pfi pfn pfo pfp pfr pia pif pii pin pio pip pir pn- pna pnf pni pnn pno pnp pnr poa pof poi pon poo pop por ppa ppf ppi ppn ppo ppp ppr pra prf pri prn pro prp prr ra- raa raf rai ran rao rap rar rfa rff rfi rfn rfo rfp rfr ria rif rii rin rio rip rir rna rni rnn rno rnp rnr roa rof roi ron roo rop ror rpa rpf rpi rpn rpo rpp rpr rra rrf rri rrn rrp rrr