Arrange in Order the Steps That Depict How Untreated Urolithiasis

Arrange in order the steps that depict how untreated urolithiasis can lead to kidney failure (A-G). (Enter the letter of each step in the proper sequence; do not use commas or spaces.)
A) Bleeding occurs when ureteral mucosa is sheared off.
B) Urine flow pushes the stone down the ureter.
C) Backward accumulation of pressure occurs into the renal pelvis.
D) Urine gets supersaturated with stone-forming salts.
E) Toxicity occurs in nephrons.
F) Intense pain is caused by buildup of pressure and spasms within the ureter.
G) Swelling of the renal pelvis is seen.