C1111233131211111211113313331333132313231323223313113313132331311   >>    C111123313121111121111331333133313231323132322331311331313233131   <<    C1111233131211111211113313331333132313231323223313113313132331313   >>      C1111233131211111211113313331333132313231323223313113313132331312   >>