Detailed instructions for working a group puzzle of type 'Hubert'

This is a signature puzzle named 'Hubert'

The 6 elements in each group of this type of puzzle are: H, U, B, E, R, and T.

Every group in the puzzle must contain exactly this set of elements.

Each row is a group numbered as shown in this Hubert figure.

In a Hubert puzzle, each row is a group numbered as shown in the figure above.

Each column is a group numbered as shown in this Hubert figure.

In a Hubert puzzle, each column is a group numbered as shown in the figure above.

Each 3x2 rectangle is a group numbered as shown in this Hubert figure.

In a Hubert puzzle, each 3x2 rectangle is a group numbered as shown in the figure above.