C2122121212121133132213231313231313231323223313231322331323222213221   >>    C212212121212113313221323131323131323132322331323132233132322221322   <<    C2122121212121133132213231313231313231323223313231322331323222213223   >>      C2122121212121133132213231313231313231323223313231322331323222213222   >>