Вставить правильные слова! it started from a fortnress on the khortytsia island in the middle of the river dnipro. to travel by water the cossacks ,use,user) light boats. such a boat ,are,were) called a 'chaika'. the boat had two steering oars and 't,can,could) easile sail in any direction. the cossacks ,sailed,sail) down the river dnipro to the black sea. then they ,cross,crossing) the sea. we ,can't,could) tell exactly how ,many,much) time it took them to travel to what is now istanbull but they ,are,where) therel.
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