Impossible main line cleaning

after the work is done

6" c/o, no-share couplings, gravels

other view

 There was no access to do the main line cleaning. Tried to pulled toilet, through roof and no result. Camera the main line and when the  house was built the plumber contractor did some wrong connections and so, when the time has come to clean the main line no way to do it. The outside 6" c/o was necessary. The depth 5', front yard. At the end clean front yard we let.