01 / 7TED≈ approximate level B26:48–6:57 , .
02 / 7TED-Ed≈ approximate level C11:50–1:58
, , .
03 / 7TED-Ed≈ approximate level B23:22–3:32
, , , , , , .
04 / 7TED-Ed≈ approximate level B10:43–0:54
's , , , - , , .
05 / 7TED≈ approximate level B16:39–6:44
, .
06 / 7TED-Ed≈ approximate level C11:40–1:50
, .
07 / 7TED≈ approximate level C18:57–9:06
, , , , , .