We are asked to determine how secure a software lock is. It makes use of the English alphabet of 26 letters. The "key" to open the lock is FOUR letters long. Upper and lower case are considered the SAME type of input. What is the MINIMUM number of QUBITS are needed to crack this code using Quantum Parallelism and a code-testing oracle? (In other words, how many qubits are needed to create a state to represent all the possible combinations using Quantum Parallelism?)