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

Input: Consider Input:  ['The blood sugar drops in a body', 'Cells in the pancrease release glucagon', 'The liver in response turns the glucagon into glucose', 'And releases it into the blood', 'The blood sugar levels are restored.'] 

Output:   Yes  


Input: Consider Input:  ['Adults have children', 'Teenagers become adults', 'Humans are born as babies', 'Babies become infants', 'Adults become elderly', 'Infants become children', 'Teenagers undergo puberty', 'Children become teenagers', 'Elderly humans die.', 'Children learn skills'] 

Output:   No  


Input: Consider Input:  ['Rain falls on wood', 'The rain seeps into the wood surface', 'It permeates the wood', 'When rain evaporates it leaves the wood', 'It takes the finish of the wood with it', 'The wood begins to lose it's luster', 'It begins to look bad', 'It has pieces of paint missing from the rain', 'It gets worse when it rains', 'It eventually will have no paint left.'] 


Output:   Yes