C211111133131323223313233313231133132333132311221123231333131321   >>    C21111113313132322331323331323113313233313231122112323133313132   <<    C211111133131323223313233313231133132333132311221123231333131323   >>      C211111133131323223313233313231133132333132311221123231333131322   >>