check nulls directly after each other
check nulls directly after each other

dinfuehr/dora,dinfuehr/dora,dinfuehr/dora,riginding/dora,riginding/dora,riginding/dora,dinfuehr/dora,dinfuehr/dora,riginding/dora,riginding/dora,riginding/dora,dinfuehr/dora,riginding/dora