Multiply by and then shift by using the alphabet .
Decrypted: aeioubcdfghjklmnpqrstvwxyzAEIOUBCDFGHJKLMNPQRSTVWXYZ1234567890
Encrypted: eiouacdfghjklmnpqrstvwxyzbEIOUACDFGHJKLMNPQRSTVWXYZB2345678901
Cycles: (uaeio)(zbcdfghjklmnpqrstvwxy)(UAEIO)(ZBCDFGHJKLMNPQRSTVWXY)(0123456789)
Plaintext, 12
12C9c1v3v11c16c2v19c16c,   1d2d
Add 1 around the wheel.
13C10c2v4v12c17c3v20c17c,   2d3d
Qmeopviyv, 23
Qmeopviyv, 23

Ciphertext, 12
2C3v12c6c2v14c16c2v19c16c,   1d2d
Subtract 1 around the wheel.
1C2v11c5c1v13c15c1v18c15c,   10d1d
Bengaqsaws, 01
Bengaqsaws, 01