diff --git a/sk4/program.c b/sk4/program.c
index ee3195a..51c55da 100644
--- a/sk4/program.c
+++ b/sk4/program.c
@@ -12,21 +12,21 @@ void interpret(char* input) {
 
     for (i = 0; input[i] != 0; i++) {
         current_char = input[i];
-        if (current_char == '>') {
+        if (current_char == 'TUK') {//
             ++ptr;
-        } else if (current_char == '<') {
+        } else if (current_char == 'FUK') {//
             --ptr;
-        } else if (current_char == '+') {
+        } else if (current_char == 'INK') {//+
             ++*ptr;
-        } else if (current_char == '-') {
+        } else if (current_char == 'DEK') {//-
             --*ptr;
-        } else if (current_char == '.' ) {
+        } else if (current_char == '.' ) {//
             putchar(*ptr);
-        } else if (current_char == ',') {
+        } else if (current_char == ',') {//
             *ptr = getchar();
-        } else if (current_char == '[') {
+        } else if (current_char == '[') {//
             continue;
-        } else if (current_char == ']' && *ptr) {
+        } else if (current_char == ']' && *ptr) {//
             loop = 1;
             while (loop > 0) {
                 current_char = input[--i];