2 in notes

plebo'o lujvo

b₁ is a sheet [2-dimensional shape flexible in 3 dimensions] of paper.

See also: plekarda, pelji, boxfo

• jbovlaste

In notes:

pelji

x₁ is paper from source x₂.

plekarda

k₁ is a sheet [small nearly-2-dimensional shape/form] of paper in shape k₃.