C1111133313331323223313331333133313231333132332131333133312111133132313311   >>    C111113331333132322331333133313331323133313233213133313331211113313231331   <<    C1111133313331323223313331333133313231333132332131333133312111133132313313   >>      C1111133313331323223313331333133313231333132332131333133312111133132313312   >>