In the event where the distance travelled exceeds the monthly usage variant, amount will be paid for additional Kms as per schedule. Similarly, the unused Kms in a particular month as against the minimum guaranteed usage variant will be carried forward to the next month and additional Km if any in the next month shall be adjusted against this. However, the payment for the selected usage variant in a month will be paid every month.” Further, the unused Kms in a particular month shall not be carried forward or adjusted beyond 6 months