C1111233131211111211113313331333133313331323223313231333131133321   >>    C111123313121111121111331333133313331333132322331323133313113332   <<    C1111233131211111211113313331333133313331323223313231333131133323   >>      C1111233131211111211113313331333133313331323223313231333131133322   >>