aaaa aaac aaar aaca aacc aacr aara aarc acaa acac acag acar acca accc acga acgr acr- acra acrc acrr agac agag agar agca agcc agga agra arac arag arar arc- arca arga arr- arra arrc arrg arrr caaa caac cac- caca cacc cacr caga cagg cagr cara carc carr ccaa ccac ccag ccar ccca cccc ccga ccgc ccra ccrc ccrg cgac cgcc cgcg crac crar crca crcc crcr gaar gaga gagg gara garg garr gc-c gcaa gccc gcrg gggg grac grcc grrr raag rac- raca racc raga ragg rara rcac rccc rcga rcgc rcrg rrrr