C11111333133313232233133313331333133313331113121111331323233232321   >>    C1111133313331323223313331333133313331333111312111133132323323232   <<    C11111333133313232233133313331333133313331113121111331323233232323   >>      C11111333133313232233133313331333133313331113121111331323233232322   >>