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:  ['Light, water and minerals, and the carbon dioxide all mix together', 'The roots absorb water and minerals from the soil', 'Carbon dioxide enters the leaf', 'This mixture forms sugar (glucose) which is what the plant eats', 'Chloroplasts in the leaf of the plant traps light from the sun', 'Oxygen goes out of the leaf through the stomata', 'This combination of water and minerals flows from the stem into the leaf'] 

Output:   No  


Input: Consider 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.'] 

Output:   Yes  


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


Output:   No