  -   (B$''''$.0) from (B$'''$.0) using Goursat's algebraic transformation (00) in [@Gour],  -   (B$''''$.0) from (B$'''$.0) using Goursat's algebraic transformation (00) in [@Gour],  -   (B$''''$.0) from (B$'''$.0) using Goursat's algebraic transformation (00) in [@Gour],  -   (B$''''$.0) from (B$'''$.0) using Goursat's algebraic transformation (00) in [@Gour].  