C11111211113313112113313331333131211113313331333132212111133133313231333111   >>    C1111121111331311211331333133313121111331333133313221211113313331323133311   <<    C11111211113313112113313331333131211113313331333132212111133133313231333113   >>      C11111211113313112113313331333131211113313331333132212111133133313231333112   >>