C211111133131323223313233313231133132333132311221123231333132332211   >>    C21111113313132322331323331323113313233313231122112323133313233221   <<    C211111133131323223313233313231133132333132311221123231333132332213   >>      C211111133131323223313233313231133132333132311221123231333132332212   >>