C2122121212121133132213231313231313231323223313231322331323133313121311   >>    C212212121212113313221323131323131323132322331323132233132313331312131   <<    C2122121212121133132213231313231313231323223313231322331323133313121313   >>      C2122121212121133132213231313231313231323223313231322331323133313121312   >>