How do bases assemble on shaker cabinets?

Ok total newbie here. I've been doing alot of reading on shaker furniture, particularly Ejner Handberg's Measured Drawings of Shaker Furniture and Woodenware, and Shop Drawings of Shaker Furniture. All fantastic books, but sometimes the drawings leave a little to be desired.

I'm looking at a Shaker Apothecary Sill Cupboard. I don't understand how the legs are made / assembled, how the side panels are joined to the front of the base, and how the stiles are joined to sides, and joined to fit...

Source: http://www.woodworkforums.com/f187/how-do-bases-assemble-shaker-cabinets-126192/

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