C1111233133313231133133313331333132313231333121111133313221312321   >>    C111123313331323113313331333133313231323133312111113331322131232   <<    C1111233133313231133133313331333132313231333121111133313221312323   >>      C1111233133313231133133313331333132313231333121111133313221312322   >>