UP ,,,
all cccc.com domain names that made from 2 chars are registered , ex :
NLLL -LNLL - LLNL - LLLN - NNLL - LLNN - NLLN - LNNL - NLNL - LNLN - LNNN - NLNN - NNLN - NNNL
and this domain has triple Q , which make it more desirable in Chinese market .