System Design:
Coding 1: https://leetcode.com/problems/word-break-ii/description/ variant
Coding 2: Given a grid whose cells are 'O' and 'X', latter being a blokcer. Given source and destination, find if there is a path exists between source and destination. You can only travel straight or take a right turn.
LLD: https://leetcode.com/discuss/interview-question/1797428/Amazon-or-Round-3(Onsite)-or-Billing-System-LLD variant