  We report the experimental observation of Kerr beam self-cleaning in a
graded-index multimode fiber, leading to output beam profiles different from a
bell shape, close to the $LP_{01}$ mode. For specific coupling conditions,
nonlinear coupling among the guided modes can reshape the output speckle
pattern generated by a pulsed beam into the low order $LP_{11}$ mode. This was
observed in a few meters long multimode fiber with 750 ps pulses at 1064 nm in
the normal dispersion regime. The power threshold for $LP_{11}$ mode
self-cleaning was about three times larger than that required for Kerr
nonlinear self- cleaning into the $LP_{01}$ mode.

Optics