ifStmt : IF condStmt COLON ( stmt NEWLINE elseStmt
                           | elseStmt);

elseStmt : NEWLINE INDENT stmt+ NEWLINE? DEDENT
          (ELIF condStmt COLON NEWLINE INDENT stmt+ NEWLINE? DEDENT)*
          (ELSE COLON NEWLINE INDENT stmt+ NEWLINE? DEDENT)*;