Generated by SassMeister.com.

SassMeister-input.scss

// ----
// libsass (v3.2.5)
// ----

@each $p, $property in (b: border, p: padding, m: margin) {
  @each $v, $value in (n: 0, s: 10px, m: 20px, l: 30px) {
    @each $d, $direction in (t: top, b: bottom) {
      .#{$p}#{$d}#{$v} {
        #{$property}-#{$direction}: #{$value};
      }
    }
    .#{$p}v#{$v} {
      @extend .#{$p}t#{$v}, .#{$p}b#{$v};
    }
  }
}

SassMeister-output.css

.btn, .bvn {
  border-top: 0;
}

.bbn, .bvn {
  border-bottom: 0;
}

.bts, .bvs {
  border-top: 10px;
}

.bbs, .bvs {
  border-bottom: 10px;
}

.btm, .bvm {
  border-top: 20px;
}

.bbm, .bvm {
  border-bottom: 20px;
}

.btl, .bvl {
  border-top: 30px;
}

.bbl, .bvl {
  border-bottom: 30px;
}

.ptn, .pvn {
  padding-top: 0;
}

.pbn, .pvn {
  padding-bottom: 0;
}

.pts, .pvs {
  padding-top: 10px;
}

.pbs, .pvs {
  padding-bottom: 10px;
}

.ptm, .pvm {
  padding-top: 20px;
}

.pbm, .pvm {
  padding-bottom: 20px;
}

.ptl, .pvl {
  padding-top: 30px;
}

.pbl, .pvl {
  padding-bottom: 30px;
}

.mtn, .mvn {
  margin-top: 0;
}

.mbn, .mvn {
  margin-bottom: 0;
}

.mts, .mvs {
  margin-top: 10px;
}

.mbs, .mvs {
  margin-bottom: 10px;
}

.mtm, .mvm {
  margin-top: 20px;
}

.mbm, .mvm {
  margin-bottom: 20px;
}

.mtl, .mvl {
  margin-top: 30px;
}

.mbl, .mvl {
  margin-bottom: 30px;
}