C2122121212121133132213231313231323131323223313231322331322112321   >>    C212212121212113313221323131323132313132322331323132233132211232   <<    C2122121212121133132213231313231323131323223313231322331322112323   >>      C2122121212121133132213231313231323131323223313231322331322112322   >>