diff --git a/less/cost.less b/less/cost.less
index c57b9aa..b7410ff 100644
--- a/less/cost.less
+++ b/less/cost.less
@@ -17,23 +17,23 @@
     /**
      * Single symbols */
     &.@{ms-prefix}-w,
-    &.@{ms-prefix}-pw {
+    &.@{ms-prefix}-wp {
         background-color: #F0F2C0;
     }
     &.@{ms-prefix}-u,
-    &.@{ms-prefix}-pu {
+    &.@{ms-prefix}-up {
         background-color: #B5CDE3;
     }
     &.@{ms-prefix}-b,
-    &.@{ms-prefix}-pb {
+    &.@{ms-prefix}-bp {
         background-color: #ACA29A;
     }
     &.@{ms-prefix}-r,
-    &.@{ms-prefix}-pr {
+    &.@{ms-prefix}-rp {
         background-color: #DB8664;
     }
     &.@{ms-prefix}-g,
-    &.@{ms-prefix}-pg {
+    &.@{ms-prefix}-gp {
         background-color: #93B483;
     }
 
@@ -193,11 +193,11 @@
     /**
      * Phyrexian mana and size increases */
     &.@{ms-prefix}-p:before,
-    &.@{ms-prefix}-pw:before,
-    &.@{ms-prefix}-pu:before,
-    &.@{ms-prefix}-pb:before,
-    &.@{ms-prefix}-pr:before,
-    &.@{ms-prefix}-pg:before {
+    &.@{ms-prefix}-wp:before,
+    &.@{ms-prefix}-up:before,
+    &.@{ms-prefix}-bp:before,
+    &.@{ms-prefix}-rp:before,
+    &.@{ms-prefix}-gp:before {
         display: inline-block;
         -moz-transform: scale( 1.2, 1.2 );
         -webkit-transform: scale( 1.2, 1.2 );
diff --git a/less/icons.less b/less/icons.less
index c6fee81..4c9b3fb 100644
--- a/less/icons.less
+++ b/less/icons.less
@@ -26,11 +26,11 @@
 .@{ms-prefix}-y:before { content: "\e616"; }
 .@{ms-prefix}-z:before { content: "\e617"; }
 .@{ms-prefix}-p:before,
-.@{ms-prefix}-pw:before,
-.@{ms-prefix}-pu:before,
-.@{ms-prefix}-pb:before,
-.@{ms-prefix}-pr:before,
-.@{ms-prefix}-pg:before { content: "\e618"; }
+.@{ms-prefix}-wp:before,
+.@{ms-prefix}-up:before,
+.@{ms-prefix}-bp:before,
+.@{ms-prefix}-rp:before,
+.@{ms-prefix}-gp:before { content: "\e618"; }
 .@{ms-prefix}-s:before { content: "\e619"; }
 
 /**