(^yb) b^-1,

(^xyc) c^-1,

(^ya^-1) (^yxc) (^yxb^-1) (^yc) (a^-1) (^x2b^-1) (^x2ya^-1) (^x2yxb^-1) (^xc) (^xb^-1) (^xya^-1)(^xyxb^-1) cb^-1

The main table

Summary