C212212121212113313221323131323133313132333132322132322331313231111   >>    C21221212121211331322132313132313331313233313232213232233131323111   <<    C212212121212113313221323131323133313132333132322132322331313231113   >>      C212212121212113313221323131323133313132333132322132322331313231112   >>