mujhe and mujhe are used alternatively, it means to me. for example. i am not aware of this issue. ( mujhe is mamaly ka nai pta). and tujhe and tujh ko are used alternatively. for example. tujhe is mamly ka nai pta. but mujh ko and tujh ko is not not used normally in casual language. normally we see its use in poetry, where we use it to maintain the balance of the verse. one more thing. tuje and tujh ko is very impolite if used in normal conversation, other than poetry.