C1111133313331323223313331333133313331323131211113312113313121323321   >>    C111113331333132322331333133313331333132313121111331211331312132332   <<    C1111133313331323223313331333133313331323131211113312113313121323323   >>      C1111133313331323223313331333133313331323131211113312113313121323322   >>