,"Difficulty level","Fact about"
"Subgroup of finite group has a left transversal that is also a right transversal",,"Subgroup of finite group; 2,Subgroup having a left transversal that is also a right transversal; 2,Left transversal of a group; ?"
"Subgroup of finite index has a left transversal that is also a right transversal",,"Subgroup of finite index; 2,Subgroup having a left transversal that is also a right transversal; 2,Left transversal of a subgroup; ?,Right transversal of a subgroup; ?"