sentences:  It is usually worked in a single stitch, such as cross stitch or tent stitch although "Beeton's book of Needlework" (1870) describes 15 different stitches for use in Berlin work.It was traditionally stitched in many colours and hues, producing intricate three-dimensional looks by careful shading.The design of such embroidery was made possible by the great progresses made in dyeing in the 1830s, especially by the discovery of aniline dyes which produced bright colors.