ref: c41c9befad2e503e0abcb3f2d8521f2147647e7d
dir: /examples/sync.orca/
....................... ....................... ....a7O................ ......58TC............. ....a5O................ ......56TC............. ....a3O................ ......54TC............. ....a1O.C.......C8..... ......52TC......6...... ........C.............. .......................