C1212121231123232233131323223313233313233313223313231323132331311   >>    C121212123112323223313132322331323331323331322331323132313233131   <<    C1212121231123232233131323223313233313233313223313231323132331313   >>      C1212121231123232233131323223313233313233313223313231323132331312   >>