Given a list of steps and an additional step, determine where the step fits into the original list of steps. A correct answer, correctly places the given step into the set of steps so that it creates a new plausible set of steps. Output must be formatted as 'After step n', where n is the step number after which the given additional step is to be inserted.

Steps: (1) Bloodstream (2) Cells in the body are attacked (3) Cells are killed (4) Different kinds of sickness are formed.  
Where does the following step fit into the given list of steps: Bacteria enters the body 
 Before step 1. 

Steps: (1) The cold water forms ice crystals (2) The ice crystals grow by absorbing surrounding water droplets (3) Form snowflakes (4) The snowflakes fall to the ground.  
Where does the following step fit into the given list of steps: Water in the clouds becomes very cold 
 Before step 1. 

Steps: (1) Enters the lungs (2) The oxygen fills the sacs in your lungs (3) Carbon dioxide is removed from the lungs and exhaled (4) The oxygen is pass throughout your body.  
Where does the following step fit into the given list of steps: Air is taken through the mouth 

 Before step 1. 

