Design a mealy machine for 2's complement

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We will design mealy machine for 2's complement.
Generally we take 2's complement as follows:

1. Take 1's complement of the input
2. Add 1 to step 1

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But here we are taking 2's complement in a different manner to design mealy machine.
The approach goes as follows:

1. Start from right to left
2. Ignore all 0's
3. When 1 comes ignore it and then take 1's complement of every digit

Example

1. Lets take 001 and we know that its 2's complement is (110+1 = 111)
2. So scan from right to left
3. On state A '1' came first to go to stage B and in output write 1
4. On state B replace '0' with '1' and vice-versa
5. So finally we got 111 as output
6. Be aware that the output is also printed in right to left order