tl;dr mc?^\([=><\|]\)\1\{6\}<CR>d?^<<<<<<<?0<CR>/^\([=><\|]\)\1\{6\}<CR>d/^>>>>>>>/0<CR>`c
mc?^\([=><\|]\)\1\{6\}<CR>d?^<<<<<<<?0<CR>/^\([=><\|]\)\1\{6\}<CR>d/^>>>>>>>/0<CR>`c