Black Sabbath - St. Vitus Dance (tab), аккорды

St. Vitus Dance
 Black Sabbath - Volume 4 (1972)
 
 Tune down 1 1/2 steps
 
 
 
 
 Riff 1 - Need help here, something like - 
   C       I use 4th finger while holding C chord
 e|---------|
 B|5----------------5---|
 G|5-------7-5---5-|5-----------5---|
 D|5-----------7----5---|
 A|3---------------|--3-6p5p3---3---|
 E----------|
 
   C        I use 4th finger while holding C chord 
 e|---------|
 B|5--------6-5-5--|5-----------5---|
 G|5------5----7---|5-----------5---|
 D|5*--------------|5-----------5---|
 A|3*--------------|3---6p5p3---3---|
 E----------|
    * - let ring
 
 Riff 2
   C5               Bb5   Eb5     F5
 e----------|
 B----------|
 G----------|
 D|5-----5-5-----5-|1-----8-87/8-10|
 A|3-----3-3-----3-|3-----6-65/6-8-|
 E----------| (X2 per verse line )
 
 
 
 
 
 Riff 3
   A                G       E   G
 e----------|
 B----------|
 G----------|
 D|7-----7-7-----7-|5-----5-2---5---|
 A|7-----7-7-----7-|5-----5-2---5---|
 E|5-----5-5-----5-|3-----3-0---3---|