a-ii aaaa aaac aaai aaar aaca aacc aaci aacr aaic aaii aara aarc aari acaa acac acai acar acca accc acci aci- acia acic acir acr- acra acrc acri acrr aiai aica aicc aicr aiia aiic aiir aira airi airx aixa aixi arac arai arar arax arc- arca arci aria arii arr- arra arrc arri arrr axar axi- axia caaa caac cac- caca cacc caci cacr caia caic cair caix cara carc cari carr carx caxa ccaa ccac ccai ccar ccca cccc ccci ccic ccii ccir ccix ccra ccrc ccri ccxi ciaa ciar cica cicc cici cicr ciia ciii cira circ ciri cirr cixi crac crai crar crax crca crcc crcr cria cric cxii cxix cxxi cxxx iaaa iaac iaai iaca iacc iacr iaia iara iarc icaa icac icai icar icca iccc icci iccr icra icrc icrr iiac iica iiii iira iirc irac irai irar irca ircc ircx iri- iria iric irix irra irrc irri ixia ixxi rac- raca racc raci raia raic raii rair raix rara rari raxa raxi rcac rccc rcic riaa riai rica ricc riia riri rixc rrrr xaar xara xcii xcri xica xiii xixi xxii xxix xxxi xxxx