F DS FS DS DF SDF SD FS DF DS FSDF SDF SDF SD FSD FSD FSDF SDF SD FSD FSD FSDF SDF SDF DSFS DS DF SD FSD SDF SD FSD SDFSD SD FS DF DS SDFSD SDF
F DS FS DS DF SDF SD FS DF DS FSDF SDF SDF SD FSD FSD FSDF SDF SD FSD FSD FSDF SDF SDF DSFS DS DF SD FSD SDF SD FSD SDFSD SD FS DF DS SDFSD SDF