You have a problem with overlapping in VM area.

VW4 includes VB4 and VB5.
VW5 includes VB5 and VB6.

Use by NAQ2 VW6.

The addressing of the VM memory is byte-oriented.
The smallest storage unit is one bit.
8 bits result in one byte.
2 consecutive bytes (16 bits) make a word.
2 consecutive words (4 bytes or 32 bits) result in a double word.

Address V0.0 is bit 0 in byte 0.
VB0 consists of bits V0.0 to V0.7.
VW0 consists of the bytes VB0 and VB1 (bits V0.0 to V1.7)
VD0 consists of VW0 and VW2 (VB0 to VB3 or V0.0 to V3.7).
For bits, in the address, the digit before the dot is the address of the byte, the digit after the dot is the address of the bit in the byte.
For words and double words, the digit is the address of the first byte.

Therefore, you should always even in words to address in 2-step words, so VW0, VW2, VW4, etc.
Therefore, you should always double-worded even in order to address in 4-step, so VW0, VW4, VW8, etc.