diff --git a/src/push_solve.rs b/src/push_solve.rs
index 1d24109..18a9315 100644
--- a/src/push_solve.rs
+++ b/src/push_solve.rs
@@ -38,9 +38,9 @@ struct CI<'a>{
 	index:usize,
 }
 impl CI<'_>{
-	fn new(pnv_list:&Vec<Contact>,index:usize)->CI<'_>{
+	fn new(conts:&Vec<Contact>,index:usize)->CI<'_>{
 		CI{
-			contact:&pnv_list[index],
+			contact:&conts[index],
 			index
 		}
 	}
@@ -273,14 +273,14 @@ fn get_best_push_ray_and_indices_4(point:Planar64Vec3,ci0:CI,ci1:CI,ci2:CI,ci3:C
 
 fn get_best_push_ray_and_indices(
 	point:Planar64Vec3,
-	pnv_list:&Vec<Contact>,
+	conts:&Vec<Contact>,
 	indices:Indices,
 )->Option<(Ray,Indices)>{
 	match indices.as_slice(){
-		&[i0,i1,i2,i3]=>get_best_push_ray_and_indices_4(point,CI::new(pnv_list,i0),CI::new(pnv_list,i1),CI::new(pnv_list,i2),CI::new(pnv_list,i3)),
-		&[i0,i1,i2]=>get_best_push_ray_and_indices_3(point,CI::new(pnv_list,i0),CI::new(pnv_list,i1),CI::new(pnv_list,i2)),
-		&[i0,i1]=>get_best_push_ray_and_indices_2(point,CI::new(pnv_list,i0),CI::new(pnv_list,i1)),
-		&[i0]=>get_best_push_ray_and_indices_1(point,CI::new(pnv_list,i0)),
+		&[i0,i1,i2,i3]=>get_best_push_ray_and_indices_4(point,CI::new(conts,i0),CI::new(conts,i1),CI::new(conts,i2),CI::new(conts,i3)),
+		&[i0,i1,i2]=>get_best_push_ray_and_indices_3(point,CI::new(conts,i0),CI::new(conts,i1),CI::new(conts,i2)),
+		&[i0,i1]=>get_best_push_ray_and_indices_2(point,CI::new(conts,i0),CI::new(conts,i1)),
+		&[i0]=>get_best_push_ray_and_indices_1(point,CI::new(conts,i0)),
 		&[]=>get_best_push_ray_and_indices_0(point),
 		_=>unreachable!(),
 	}
@@ -289,8 +289,8 @@ fn get_best_push_ray_and_indices(
 fn get_touch_time(ray:&Ray,c:&Contact)->Planar64{
 	(ray.origin-c.position).dot(c.normal)/(c.velocity-ray.direction).dot(c.normal)
 }
-fn get_first_touch(pnv_list:&Vec<Contact>,ray:&Ray,indices:&Indices)->Option<(Planar64,usize)>{
-	pnv_list.iter()
+fn get_first_touch(conts:&Vec<Contact>,ray:&Ray,indices:&Indices)->Option<(Planar64,usize)>{
+	conts.iter()
 		.enumerate()
 		.filter(|&(i,contact)|
 			!indices.contains(&i)
@@ -300,10 +300,10 @@ fn get_first_touch(pnv_list:&Vec<Contact>,ray:&Ray,indices:&Indices)->Option<(Pl
 		.min_by_key(|&(t,_)|t)
 }
 
-pub fn push_solve(pnv_list:&Vec<Contact>,point:Planar64Vec3)->Option<Planar64Vec3>{
+pub fn push_solve(conts:&Vec<Contact>,point:Planar64Vec3)->Option<Planar64Vec3>{
 	let (mut ray,mut indices)=get_best_push_ray_and_indices_0(point)?;
 	loop{
-		let (next_t,next_index)=get_first_touch(pnv_list,&ray,&indices)?;
+		let (next_t,next_index)=get_first_touch(conts,&ray,&indices)?;
 
 		if Planar64::ZERO<=next_t{
 			return Some(ray.origin);
@@ -316,13 +316,13 @@ pub fn push_solve(pnv_list:&Vec<Contact>,point:Planar64Vec3)->Option<Planar64Vec
 		indices.push(next_index);
 
 		let meet_point=ray.extrapolate(next_t);
-		match get_best_push_ray_and_indices(meet_point,pnv_list,indices){
+		match get_best_push_ray_and_indices(meet_point,conts,indices){
 			Some((new_ray,new_indices))=>(ray,indices)=(new_ray,new_indices),
 			None=>return Some(meet_point),
 		}
 	}
 }
 
-pub fn push_solve_with_output(pnv_list:&Vec<Contact>,point:Planar64Vec3,output:&mut Vec<Planar64Vec3>){
+pub fn push_solve_with_output(conts:&Vec<Contact>,point:Planar64Vec3,output:&mut Vec<Planar64Vec3>){
 	//
 }