renamed symbols must be always greater than or equal to 0
renamed symbols must be always greater than or equal to 0

leavesbnw/picrin,omasanori/picrin,leavesbnw/picrin,omasanori/picrin,dcurrie/picrin,leavesbnw/picrin,dcurrie/picrin,ktakashi/picrin,ktakashi/picrin,ktakashi/picrin,picrin-scheme/picrin,picrin-scheme/picrin,koba-e964/picrin,koba-e964/picrin,koba-e964/picrin