a-a a-i aaa aaf aai aam aap aar af- afa aff afi afm afp afr ai- aia aif aii aim aip air ama amf ami amm amp amr ap- apa apf api apm app apr ar- ara arf ari arm arp arr faa faf fai fam fap far ffa fff ffi ffm ffp ffr fia fif fii fim fip fir fma fmf fmi fmm fmp fmr fpa fpi fpm fpp fpr fra frf fri frm frp frr i-f ia- iaa iaf iai iam iap iar ifa iff ifi ifm ifp ifr iia iif iii iim iip iir im- ima imf imi imm imp ipa ipf ipi ipm ipp ipr ir- ira irf iri irm irp irr m-f m-r maa maf mai mam map mar mfa mff mfi mfm mfp mfr mi- mia mif mii mim mip mir mma mmf mmi mmm mmp mmr mpa mpf mpi mpm mpp mpr mra mrf mri mrm mrp mrr p-p paa paf pai pam pap par pfa pff pfi pfm pfp pfr pia pif pii pim pip pir pma pmf pmi pmm pmp pmr ppa ppf ppi ppm ppp ppr pra prf pri prm prp prr ra- raa raf rai ram rap rar rfa rff rfi rfm rfp rfr ria rif rii rim rip rir rma rmf rmi rmm rmp rmr rpa rpf rpi rpm rpp rpr rra rrf rri rrm rrp rrr