Grandfather's properties and fathers self acquired properties in HUF.

My father is eldest died with heart attack without any settlement on grandfather properties and father self acquired properties in HUF. Which all lands are positioning by my father brothers two and sisters six trying to cheat us by showing 3 different unregistered settlements on white papers held in 1997 1999 and 2005.My grand father died in 1995 and my father died in 2017.we are 4 children one eder sister and two younger brothers. My sister got married in 2004 but not under HUF.. Now all the four children are married and every one of us have two daughters. And the settlement of 2005 is not known to anyone in my family including my mother. 2005 settlement Which is relived out by my father brothers and sisters after asking so many timess only shown xerox and all properties documents are with them only not given even one single set of properties documents. Only 1997 settlement is known to my family members which is witnessed by 10 members of the village including village president. Q1.WHAT ARE OUR RIGHTS ON THE PROPERTIES? Q2.ARE THE SETTLEMENTS MADE VALID? Q3.How to get the right on lands and documents?