Draw each of the following. Note: If you do not remember the stereocenter configurations for a particular sugar, guess; substantial partial credit will be given if the remainder of the structure is correct. (22 points):
a. A dash-wedge structure of any kind of ketopentose.
b. A Fischer projection of L-allose.
c. A Eischer protection of art-mannopyranose.
d. A Haworth projection of p-o-talopyranose.
e. A furanose written in any manner you chose.