C1111233133313231133133313331323133313113313121111331321123231323221   >>    C111123313331323113313331333132313331311331312111133132112323132322   <<    C1111233133313231133133313331323133313113313121111331321123231323223   >>      C1111233133313231133133313331323133313113313121111331321123231323222   >>