C1111133313331323223313331333133313311211111213331323223313231312321   >>    C111113331333132322331333133313331331121111121333132322331323131232   <<    C1111133313331323223313331333133313311211111213331323223313231312323   >>      C1111133313331323223313331333133313311211111213331323223313231312322   >>