C1212121231123232233131323223313233313233313223313231133132313132322311   >>    C121212123112323223313132322331323331323331322331323113313231313232231   <<    C1212121231123232233131323223313233313233313223313231133132313132322313   >>      C1212121231123232233131323223313233313233313223313231133132313132322312   >>