C2122121212121133132213231313231323131323223313231322331323133313331311312121   >>    C212212121212113313221323131323132313132322331323132233132313331333131131212   <<    C2122121212121133132213231313231323131323223313231322331323133313331311312123   >>      C2122121212121133132213231313231323131323223313231322331323133313331311312122   >>