C1111233133313231133133313331333132313231333121111121111113313132211   >>    C111123313331323113313331333133313231323133312111112111111331313221   <<    C1111233133313231133133313331333132313231333121111121111113313132213   >>      C1111233133313231133133313331333132313231333121111121111113313132212   >>