01 / 7Practical Engineering≈ approximate level C18:45–8:48 , .
02 / 7Practical Engineering≈ approximate level B20:17–0:24
.
03 / 7Practical Engineering≈ approximate level C110:01–10:12
, , .
04 / 7Practical Engineering≈ approximate level C19:51–10:01
, .
05 / 7Practical Engineering≈ approximate level C12:10–2:22
, , , , .
06 / 7Practical Engineering≈ approximate level C13:49–3:58
, , , .
07 / 7Practical Engineering≈ approximate level C11:28–1:39
-- , .