original: it consists of seven or eight stages and oscillates around 1,200km in length .
simplifications: it consists of seven or eight stages and oscillates around 1,200km in length . it consists of seven or eight stages and oscillates around 1,200km in length . there are seven or eight stages of oscillation around the 1,200 km in length . it is around 1200 km in length consisting of seven or eight stages and oscillates it consists of seven or eight stages and oscillates around 1,200km . it 's made up of seven or eight stages and hovers around 1,200km in length . it has seven or eight stages and moves around 1,200km in length . it consists of seven or eight stages and oscillates around 1,200 km in length .