a-a a-i aaa aai aar aav aax ai- aia aii air aiv aix ar- ara ari arr arv arx av- ava avi avr avx ax- axa axi axr axv axx i-v ia- iaa iai iar iav iia iii iir iix ir- ira iri irr irv irx iva ivi ivr ivv ivx ixi ra- raa rai rar rav rax ria rii rir riv rix rra rri rrr rva rvi rvr rvv rxr v-a vaa vai var vav vax vi- via vii vir viv vix vra vri vrr vva vvi vvr vvv vxa vxr vxv xaa xar xav xia xii xiv xix xrx xvi xxi xxv xxx