a carriage assembly comprising a front stop support plate extending between the first and second lateral support plates, a first carriage member movably connecting the front stop support plate to the first lateral support plate, and {HEAD ~ a second carriage member} movably connecting {TAIL ~ the front stop support plate} to the second lateral support plate 
movably connecting
a carriage assembly comprising a front stop support plate extending between the first and second lateral support plates , a first carriage member movably connecting the front stop support plate to the first lateral support plate , and { HEAD ~ a second carriage member } movably connecting { TAIL ~ the front stop support plate } to the second lateral support plate
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