C111123313121111121111331323133313331333132322121111121133132311321   >>    C11112331312111112111133132313331333133313232212111112113313231132   <<    C111123313121111121111331323133313331333132322121111121133132311323   >>      C111123313121111121111331323133313331333132322121111121133132311322   >>