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 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.'] 

Output:   Yes  


Input: Consider Input:  ['A circuit is completed between the batteries and the lamp', 'The flashlight is turned on', 'The beam is no longer visible.', 'Batteries are put in a flashlight', 'The reflector in the flashlight directs the lamp's beam', 'The circuit is broken', 'Two contact strips touch one another', 'A straight beam of light is generated', 'The lamp in the flashlight begins to glow', 'The flashlight is turned off'] 

Output:   No  


Input: Consider Input:  ['The core of the star collapses', 'A star burns in space', 'A white dwarf has been formed.', 'Becomes a red giant', 'Once the red giant burns itself out', 'Eventually it burns all its hydrogen', 'Only the core is left', 'The gasses will start to disperse'] 


Output:   No