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Gue de Constantine is a 8 building complex in Algeirs, Algeria. How long can atleast a building or two survive?

2 Days: Sand destroys the lower floors.

1 Week: Sand destroys the doors and windows, Gue de Constantine E collapses. 7 buildings remain.

1 Month: Gue de Constantines A, C and H collapse. 4 buildings remain.

9 Months: Gue de Constantine G collapses, 3 buildings remain (now skeletons of the buildings)

1 Year: Sand knocks down Gue de Constantines B and F. Only Gue de Constantine D remains.

2 Years: Gue de Constantine D collapses.