C2122121212121133132213231313231313231323223313231322331323331323331322331221   >>    C212212121212113313221323131323131323132322331323132233132333132333132233122   <<    C2122121212121133132213231313231313231323223313231322331323331323331322331223   >>      C2122121212121133132213231313231313231323223313231322331323331323331322331222   >>