C1111233133313231133133313331323133313113313121111113313132212321   >>    C111123313331323113313331333132313331311331312111111331313221232   <<    C1111233133313231133133313331323133313113313121111113313132212323   >>      C1111233133313231133133313331323133313113313121111113313132212322   >>