You need to answer the question 'Are the given steps in order?', given a set of steps describing a process. Your answer must be either Yes or No. If the answer is No, that means the steps are out of order and do not make sense in the order they are in. If the answer is Yes, that means the steps are in order and make sense in the order that they are in. A set of steps are not in order if the steps reference information that is introduced in a later step

Ex Input:
 ['The copies infect other cells to make more viruses, or they escape from the body and infect a new victim', 'The receptors will lock onto a target cell using these chemical receptors on the surface, which docks onto the cell surface', 'The flu virus has receptors, which are like viral Velcro, on the surface of the virus particle', 'The receptors  then go into the cell', 'The receptors use it like a factory', 'The copies come streaming out of the cell', 'The receptors take it over and make it produce thousands or in some cases millions of copies of new viruses'] 

Ex Output:
  No  


Ex Input:
 ['The bird picks a tree', 'The bird collects twigs and other refuse', 'The bird makes a flat base with twigs', 'The bird makes sides with twigs and other things', 'The bird adds softer material to the inside', 'The nest is done.'] 

Ex Output:
  Yes  


Ex Input:
 ['You start with a glacier', 'Through warming or other methods a chunk is taken off the glacier', 'The chunk drifts into the sea', 'And it settles where it can remain in its state', 'It is considered an iceberg.'] 

Ex Output:

  Yes