C11111211113313112113313331333133313113121111331333132322121323321   >>    C1111121111331311211331333133313331311312111133133313232212132332   <<    C11111211113313112113313331333133313113121111331333132322121323323   >>      C11111211113313112113313331333133313113121111331333132322121323322   >>