• richer,
• ricor,
• rickeer,
• rjcker,
• r8cker,
• rixker,
• rivker,
• rifker,
• ridker,
• ricjer,
• ricmer,
• ricoer,
• rickwr,
• ricksr,
• rickdr,
• rickee,
• rickerd,
• Rikker,
• Rickar,
• Rickerby

• rieger,
• Riker,
• ricer,
• riser,
• risher,
• richer,
• rigger,
• rigor,
• risser,
• racker,
• Rucker,
• rieser,
• rockery,
• recker,
• Rizor,
• rizer,
• rocker.

The plural of the "Ricker" can be the "rickers".

The singular of the "Ricker" can be the "Ricker".