If you have installed Extended Block Shapes and Blockus mod, you may optionally install "Extended Block Shapes - Blockus" mod based on that two mods, so that extended shapes for Blockus blocks will also be added.
Note: There are no specific groups for these blocks. Therefore, to find these blocks in creative inventory, you need to enable "Add to vanilla groups" in the mod options of "Extended Block Shapes", and find these blocks in Blockus item groups.
Some of the extended shapes of blockus of Blockus mod, such as small logs, glazed terracotta columns, herringbone planks, charred planks, rainbow glowstone and polished amethyst.
The Blockus Colored Blocks item group in the creative inventory, which includes blocks added by this mod.
Some of the extended shapes of blocks of Blockus, including star block, nether star block, ender block and polished end stone.
The Blockus Building Blocks item group in the creative intenvory screen, which includes blocks added by this mod.