-ana -vac aaaa aaac aaan aaar aaav aaca aacc aacn aacr aacv aana aara aarc aava acaa acac acan acar acca accc acr- acra acrc acrr acrv acvv ana- anaa anac anan anar anca ancc anna anrc arac aran arar arc- arca arna arr- arra arrc arrr arva arvn avan avar avcc avra avva caaa caac caan cac- caca cacc cacr cana canc cann cara carc carn carr cava ccaa ccac ccar ccca cccc cccv ccna ccnc ccnr ccra ccrc cnaa cnac cnna cnrc cnrr crac cran crar crca crcc crcr crna cvac cvar cvca cvcc cvra cvrr naaa naac naan naar naca nacc nan- nana nann nara narc narn narr nava navr navv ncaa ncac ncar ncca nccc nccn nccr ncna ncnc ncra ncrc nnnn nrca nrna nrrc nvcc raan rac- raca racc racv rana ranc rann rara rava rcac rccc rcnr rcvr rrna rrrr rv-c rvca vaan vaar vaca vana vanc vann vara varn varr vava vnav vrac vran vrav vrnn vvvv