args()
{
	name=$1; shift

	printf '%s:\t%d:\t' "$name" "$#"
	printf '<%s>' "$@"
	printf '\n'
}

IFS=' ,'

S=' '
C=','
W='abc'
SW=' abc'
WS='abc '
SWS=' abc '
CW=',abc'
WC='abc,'
CWC=',abc,'
WSW='abc def'
WSSW='abd  def'
WCW='abc,def'
WCCW='abc,,def'
WSCW='abc ,def'
WCSW='abc, def'
WSCSW='abc , def'
WSCSCSW='abc , , def'
WSCSCSWS='abc , , def '
WSCSCSWC='abc , , def,'
SS='  '
SSS='   '
CC=',,'
CCC=',,,'
SC=' ,'
CS=', '
SCCS=' ,, '
CSSC=',  ,'
SCWSCWCS=' ,abc ,def, '
SSCSSCSSCSS='  ,  ,  ,  '

args W $W
args SW $SW
args WS $WS
args SWS $SWS
args CW $CW
args WC $WC
args CWC $CWC
args WSW $WSW
args WSSW $WSSW
args WCW $WCW
args WCCW $WCCW
args WSCW $WSCW
args WCSW $WCSW
args WSCSW $WSCW
args WSCSCSW $WSCSCSW
args WSCSCSWS $WSCSCSWS
args WSCSCSWC $WSCSCSWC
args S $S
args C $C
args SS $SS
args SSS $SSS
args CC $CC
args CCC $CCC
args SC $SC
args CS $CS
args SCCS $SCCS
args CSSC $CSSC
args SCWSCWCS $SCWSCWCS
args SSCSSCSSCSS $SSCSSCSSCSS

args pW p${W}
args pSW p${SW}
args pWS p${WS}
args pSWS p${SWS}
args pCW p${CW}
args pWC p${WC}
args pCWC p${CWC}
args pWSW p${WSW}
args pWSSW p${WSSW}
args pWCW p${WCW}
args pWCCW p${WCCW}
args pWSCW p${WSCW}
args pWCSW p${WCSW}
args pWSCSW p${WSCW}
args pWSCSCSW p${WSCSCSW}
args pWSCSCSWS p${WSCSCSWS}
args pWSCSCSWC p${WSCSCSWC}
args pS p${S}
args pC p${C}
args pSS p${SS}
args pSSS p${SSS}
args pSC p${SC}
args pCS p${CS}
args pCSSC p${CSSC}
args pSSS p${SSS}
args pCCC p${CCC}
args pSCCS p${SCCS}
args pSCWSCWCS p${SCWSCWCS}
args pSSCSSCSSCSS p${SSCSSCSSCSS}

args Wq ${W}q
args SWq ${SW}q
args WSq ${WS}q
args SWSq ${SWS}q
args CWq ${CW}q
args WCq ${WC}q
args CWCq ${CWC}q
args WSWq ${WSW}q
args WSSWq ${WSSW}q
args WCWq ${WCW}q
args WCCWq ${WCCW}q
args WSCWq ${WSCW}q
args WCSWq ${WCSW}q
args WSCSWq ${WSCW}q
args WSCSCSWq ${WSCSCSW}q
args WSCSCSWSq ${WSCSCSWS}q
args WSCSCSWCq ${WSCSCSWC}q
args Sq ${S}q
args Cq ${C}q
args SSq ${SS}q
args SSSq ${SSS}q
args SCq ${SC}q
args CSq ${CS}q
args CSSCq ${CSSC}q
args SSSq ${SSS}q
args CCCq ${CCC}q
args SCCSq ${SCCS}q
args SCWSCWCSq ${SCWSCWCS}q
args SSCSSCSSCSSq ${SSCSSCSSCSS}q

args pWq p${W}q
args pSWq p${SW}q
args pWSq p${WS}q
args pSWSq p${SWS}q
args pCWq p${CW}q
args pWCq p${WC}q
args pCWCq p${CWC}q
args pWSWq p${WSW}q
args pWSSWq p${WSSW}q
args pWCWq p${WCW}q
args pWCCWq p${WCCW}q
args pWSCWq p${WSCW}q
args pWCSWq p${WCSW}q
args pWSCSWq p${WSCW}q
args pWSCSCSWq p${WSCSCSW}q
args pWSCSCSWSq p${WSCSCSWS}q
args pWSCSCSWCq p${WSCSCSWC}q
args pSq p${S}q
args pCq p${C}q
args pSSq p${SS}q
args pSSSq p${SSS}q
args pSCq p${SC}q
args pCSq p${CS}q
args pCSSCq p${CSSC}q
args pSSSq p${SSS}q
args pCCCq p${CCC}q
args pSCCSq p${SCCS}q
args pSCWSCWCSq p${SCWSCWCS}q
args pSSCSSCSSCSSq p${SSCSSCSSCSS}q