C2122121212121133132213231313231313231323223313231322331323132322133311231   >>    C212212121212113313221323131323131323132322331323132233132313232213331123   <<    C2122121212121133132213231313231313231323223313231322331323132322133311233   >>      C2122121212121133132213231313231313231323223313231322331323132322133311232   >>