ref: f4ff0e71ad64edef5f74412cbc069414a69e9f92
dir: /examples/sync.orca/
....................... ....................... ....a7O................ ......58TC............. ....a5O................ ......56TC............. ....a3O................ ......54TC............. ....a1O.C.......C8..... ......52TC......6...... ........C.............. .......................