C1111233131211111211113313133313331323133313231323223313233233311   >>    C111123313121111121111331313331333132313331323132322331323323331   <<    C1111233131211111211113313133313331323133313231323223313233233313   >>      C1111233131211111211113313133313331323133313231323223313233233312   >>