build the shape with an element list instead of push_backs (#6452)
build the shape with an element list instead of push_backs (#6452)


hail-is/hail,hail-is/hail,cseed/hail,danking/hail,cseed/hail,danking/hail,cseed/hail,hail-is/hail,hail-is/hail,cseed/hail,danking/hail,danking/hail,hail-is/hail,danking/hail,cseed/hail,danking/hail,cseed/hail,hail-is/hail,hail-is/hail,hail-is/hail,cseed/hail,danking/hail,cseed/hail,danking/hail