| /2 width=1 by cnv_sort, cnv_zero/
| /4 width=1 by cnv_sort, cnv_zero, cnv_lref, cnv_bind/
| /2 width=3 by cpms_ell, lifts_sort/
| /2 width=1 by cnv_sort, cnv_zero/
| /4 width=1 by cnv_sort, cnv_zero, cnv_lref, cnv_bind/
| /2 width=3 by cpms_ell, lifts_sort/